Hubbry Logo
Smelt (fish)Smelt (fish)Main
Open search
Smelt (fish)
Community hub
Smelt (fish)
logo
8 pages, 0 posts
0 subscribers
Be the first to start a discussion here.
Be the first to start a discussion here.
Smelt (fish)
Smelt (fish)
Smelt (fish)
View on Wikipedia
from Wikipedia
For other uses, see Smelt (disambiguation).

Smelt
Temporal range: Oligocene–present
Pond smelt (Hypomesus olidus)
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Osmeriformes
Suborder: Osmeroidei
Family: Osmeridae
Regan, 1913
Genera

Allosmerus
Hypomesus
Mallotus
Osmerus
Plecoglossus
Spirinchus
Thaleichthys
†Enoplophthalmus (fossil)
?†Speirsaenigma (fossil)

Smelts are a family of small fish, the Osmeridae, found in the North Atlantic and North Pacific oceans, as well as rivers, streams and lakes in Europe, North America and Northeast Asia. They are also known as freshwater smelts or typical smelts to distinguish them from the related Argentinidae (herring smelts or argentines), Bathylagidae (deep-sea smelts), and Retropinnidae (Australian and New Zealand smelts).

Some smelt species are common in the North American Great Lakes, and in the lakes and seas of the northern part of Europe, where they run in large schools along the saltwater coastline during spring migration to their spawning streams. In some western parts of the United States, smelt populations have greatly declined in recent decades, leading to their protection under the Endangered Species Act. The Delta smelt (Hypomesus transpacificus) found in the Sacramento Delta of California, and the eulachon (Thaleichthys pacificus) found in the Northeast Pacific and adjacent rivers, are both protected from harvest.

Some species of smelts are among the few fish that sportsmen have been allowed to net, using hand-held dip nets, either along the coastline or in streams. Some sportsmen also ice fish for smelt. They are often fried and eaten whole.

The earliest known fossil smelt is Enoplophthalmus from the Early Oligocene of Europe; Speirsaenigma from the Paleocene of Canada may be an even earlier representative, although some authors instead consider it a relative of the ayu.[1][2]

Description

[edit]

In size, most species rarely exceed 20 centimetres (8 in), although some grow larger. Some females of European smelt can reach 25–40 cm (9.8–15.7 in) in length.[3]

Like salmon, many species are anadromous, living most of their lives in the sea, but traveling into fresh water to breed. However, a few exceptions, such as the surf smelt, spend their entire lives at sea.[4]

Family Osmeridae
Osmeridae

Salangidae, Plecoglossus

Hypomesus

Mallotus

Osmerus

Thaleichthys

Allosmerus

Spirinchus

Cladogram of the family Osmeridae. Salangidae and Plecoglossus might be sister clades to the osmerid genera.[5]

Smelt dipping

[edit]
Smelt dipping in the Keweenaw Peninsula in Michigan

In the Canadian provinces and U.S. states around the Great Lakes, "smelt dipping" is a common group sport in the early spring and when stream waters reach around 4 °C (39 °F). Fish are spotted using a flashlight or headlamp and scooped out of the water using a dip net made of nylon or metal mesh. The smelt are cleaned by removing the head and the entrails. Fins, scales, and bones of all but the largest of smelts are cooked without removal.[6]

On the Maine coast, smelts were also a sign of spring, with the run of these small fish up tiny tidal estuaries. Many of these streams were narrow enough for a person to straddle and get a good catch of smelts by dipping a bucket.[6]

Culinary use

[edit]
Close-up of smelt for sale at a California seafood market

North America

[edit]

Smelts are an important winter catch in the saltwater mouths of rivers in New England and the Maritime Provinces of Canada. Fishermen would historically go to customary locations over the ice using horses and sleighs. Smelt taken out of the cold saltwater were preferred to those taken in warm water. The fish did not command a high price on the market, but provided a source of supplemental income due to their abundance. The smelts were "flash frozen" simply by leaving them on the ice and then sold to fish buyers who came down the rivers.

In the present day, smelts are fished commercially using nets at sea, and for recreation by hand-netting, spearing or angling them through holes in river ice. They are often the target fish of small 'fishing shack' villages that spring up along frozen rivers. Typical ways of preparing them include pan-frying in flour and butter, deep-frying in batter and cooking them, directly out of the water, over small stoves in the shacks.

In January 2025, the smelt gained notoriety after being mentioned by president-elect Donald Trump in a critique of Gavin Newsom, the governor of California during the 2025 California wildfires. In his January 8, 2025 Truth Social post, Trump referred to the smelt as "an essentially worthless fish," and he stated that Newsom blocked the provision of water for drinking purposes and firefighters in order to protect local smelt populations, which ultimately led to raging wildfires and extensive property damage.[7][8]

Canada

[edit]
Fried smelt

Indigenous peoples in Canada native to the Great Lakes regions (Lake Huron, Lake Ontario, and Lake Superior), as well as nearby Lake Erie (which still is well known for its smelts today), were both familiar and partially dependent upon smelts as a dietary source of protein and omega fats that didn't require a large effort or hunting party to obtain. Smelts are one of the best choices of freshwater and saltwater fish to eat, as one of the types of edible fish with the lowest amount of mercury.[9]

Smelts can be found in the Atlantic and Pacific oceans, as well as in some freshwater lakes across Canada. Smelts were eaten by many different native peoples who had access to them. One popular way that First Nations of the Pacific coast made dried smelts more appealing was to serve it with oil.[9] Eulachon, a type of smelt, contains so much oil during spawning that, once dried, it can literally be burned like a candle; hence its common nickname of the "candlefish".[9]

Today, there are numerous recipes and methods of preparing and cooking smelts. A popular First Nations recipe calls for the removal of all the fishes' bones, uses canola or peanut oil for frying, and has a breaded-like coating mixed with lemon juice and grated parmesan cheese (with a few other basic ingredients) to coat the smelts prior to frying them.[9]

East Asia

[edit]
Dried smelt

Smelt is popular in Japan, as the species Sprinchus lanceolatus, and is generally served grilled, called shishamo, especially when full of eggs.

Smelt roe, specifically from capelin, called masago in Japanese, is yellow to orange in color and is often used in sushi.

Smelt is also served in Chinese dim sum restaurants where it is deep fried with the heads and tails attached, identified as duō chūn yú (多春魚) or duō luǎn yú (多卵魚), "many egg fish" or which loosely translates as "fish with many eggs".[10]

Smelt is one of the prime fish species eaten in Tamil Nadu as Nethili fry, Nethili karuvadu (dried fish), coastal Karnataka, especially in Mangalore and Udupi regions, usually fried with heads and tailed removed or in curries. They are called 'Bolingei' (ಬೊಳಂಜೆ) in Kannada and Tulu and 'MotiyaLe' in Konkani.[citation needed]

Festivals

[edit]
Fishing for smelt, Gold Bluffs Beach, Orick, California, 1972

In the city of Inje, South Korea (Gangwon Province), an Ice Fishing Festival is held annually from 30 January to 2 February on Soyang Lake, coinciding with the smelt's yearly run into fresh water to spawn. They are locally known as bing-eo (빙어) and typically eaten alive or deep-fried.[11]

In Finland, the province of Paltamo has yearly Norssikarnevaali festivals in the middle of May.

For some Italians, especially from the region of Calabria, fried smelts are a traditional part of the Christmas Eve dinner consisting of multiple courses of fish.

In 1956, the Chamber of Commerce in Kelso, Washington, declared Kelso, located on the Cowlitz River, as the "Smelt Capital of the World". They erected billboards proclaiming this, and held festivals for the annual smelt runs until the runs dried up.[9]

The village of Lewiston, New York, on the lower portion of the Niagara River, celebrates an annual two-day smelt festival the first weekend in May.[12][13] During the festival, approximately 160 kilograms (350 pounds) of smelt are battered and fried at the Lewiston Waterfront.[14] The smelt samples are free during the festival and donations are welcome, as they help support programs supported by the Niagara River Anglers. The festival has a motto, which is a play on words: "Lewiston never smelt so good."[15]

Lithuania celebrates an annual weekend smelt festival in Palanga "Palangos Stinta" early every January.

The American Legion Post 82, in Port Washington, Wisconsin, has been hosting its annual Smelt Fry since 1951. Located on the Western shore of Lake Michigan, 35 miles (56 km) north of Milwaukee, Port Washington has a long history as a fishing community with commercial and sports ventures. The Legion's Smelt Fry happens every year in mid to late April. In mid-July, the quaint town hosts their Fish Day event, billed as "The world's largest, one-day, outdoor fish fry!"

At the time of the smelt's spring run in the Neva River at the head of the Gulf of Finland on the Baltic Sea in Saint Petersburg, a Smelt Festival [ru] (Prazdnik koryushki) is celebrated.

The Magic Smelt Puppet Troupe of Duluth, Minnesota has held an annual "Run, Smelt, Run!" puppet-based second line parade, smelt fry, and dance party since 2012.[16] The troupe occasionally hosts other performances throughout the year.

See also

[edit]

References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Smelt (fish)

View on Grokipedia
from Grokipedia
Smelts are small, slender-bodied fishes comprising the family Osmeridae, which inhabit cold coastal, estuarine, and freshwater habitats across the . They are characterized by an adipose fin, spineless fins, scales that are easily detached, and a silvery, iridescent appearance with a pale green back and white underside in many species. Most species are anadromous, migrating from marine or brackish waters into rivers or lakes to spawn, often in large schools that support traditional dip-net fisheries. Ecologically, smelts serve as key for predatory fish such as and , as well as birds and mammals, forming a vital link in northern aquatic webs. Their delicate, mild flavor and soft, edible bones make them prized for culinary uses, commonly prepared by , , or whole. While some populations, like the rainbow smelt in the , have expanded as influencing local ecosystems, others such as the face declines due to alterations and competition.

Taxonomy and Classification

Major Species and Genera

The family Osmeridae includes six recognized genera—Allosmerus, Hypomesus, Mallotus, Osmerus, Spirinchus, and Thaleichthys—containing a total of 15 species distributed primarily in cold waters. The genus Osmerus, with three species, represents the archetypal smelts and includes the widespread Osmerus mordax (rainbow smelt), native to coastal and freshwater systems of eastern but introduced across much of and for and , and Osmerus eperlanus (European smelt or sparling), found in the North Atlantic and rivers. These species are anadromous, migrating from marine to freshwater habitats for spawning, and support commercial fisheries in regions like the and European coasts. Hypomesus, comprising five species, features pond and surf-adapted forms such as Hypomesus olidus (pond smelt), occurring in and freshwaters of and , and Hypomesus transpacificus (), an endemic to California's Sacramento-San Joaquin Delta , threatened by alteration and water diversions since the 1980s. Hypomesus pretiosus (surf smelt) inhabits Pacific coastal beaches from to , spawning in upper intertidal zones. Thaleichthys is monotypic, represented solely by Thaleichthys pacificus (eulachon or candlefish), an anadromous Pacific species from California to Alaska known for its high oil content, historically rendered into candles by indigenous peoples, and currently facing population declines due to overfishing and river damming. Mallotus, with four species, includes the highly abundant Mallotus villosus (capelin), a keystone forage fish in the North Atlantic and Arctic, forming massive spawning aggregations on beaches and supporting predatory fisheries for cod and seals, with biomass estimates exceeding millions of tonnes in Icelandic waters as of 2020 surveys. The remaining genera, Allosmerus (one species: Allosmerus elongatus, of the northeast Pacific) and Spirinchus (two species, including the grubby smelt of waters), are less commercially prominent but ecologically significant in coastal marine food webs.
GenusNumber of SpeciesKey Species ExampleDistribution Notes
Osmerus3O. mordax (rainbow smelt)North Atlantic, introduced widely
Hypomesus5H. transpacificus ()Pacific fresh/brackish, endangered
Thaleichthys1T. pacificus ()Northeast Pacific anadromous
Mallotus4M. villosus ()North Atlantic/Arctic beaches
Allosmerus1A. elongatus ()Northeast Pacific coastal
Spirinchus2S. thaleichthys (grubby smelt) coastal

Evolutionary and Phylogenetic Context

The family Osmeridae, comprising smelts, is classified within the order , a group of primarily soft-rayed fishes characterized by elongate bodies and adaptations to pelagic or anadromous lifestyles. Molecular phylogenetic analyses using mitochondrial (cytb) sequences indicate that the genus Mallotus (including the ) represents the earliest diverging lineage within Osmeridae, separating from a common ancestor before the radiation of other genera. Subsequent cladogenesis yielded two main clades: one encompassing Osmerus, Hypomesus, and Spirinchus, and the other including Thaleichthys and Allosmerus, reflecting divergences driven by geographic isolation in Holarctic regions during the era. These relationships, reconstructed via on mtDNA and corroborated by multi-locus nuclear markers (e.g., , S7), highlight in morphological traits like adipose presence, underscoring the value of genetic data over traditional anatomy for resolving osmerid phylogeny. In broader teleostean phylogeny, Osmeriformes form part of the Euteleostei clade, with osmerids exhibiting basal traits such as a single dorsal fin and cycloid scales, suggestive of an ancient divergence from argentiniform ancestors around the Cretaceous-Paleogene boundary. Biogeographic patterns, including Holarctic endemism and limited southern extensions (e.g., via Lovettia in Australia), imply post-Gondwanan radiation facilitated by cooling climates and marine incursions, with molecular clocks estimating genus-level splits between 20-40 million years ago. Anadromy, a key life-history strategy in many osmerids, likely evolved once from marine ancestors, enabling freshwater colonization and diversification amid Pleistocene glaciations, though some lineages (e.g., dwarf Osmerus ecotypes) show iteroparous adaptations as derived responses to local selection pressures. The fossil record supports an early Cenozoic origin for Osmeridae, with Paleocene specimens like Speirsaenigma from indicating proto-osmerid forms predating Oligocene diversification in (Enoplophthalmus), and Miocene taxa from (Ferruaspis brocksi) evidencing opportunistic benthopelagic habits in ancestral osmeriforms. These fossils, preserved in lacustrine deposits, reveal morphological stasis in alongside ecological shifts toward cooler, temperate habitats, consistent with phylogenetic inferences of under fluctuating paleoclimates rather than major morphological innovations.

Physical Characteristics

Morphology and Anatomy

Smelts of the family Osmeridae exhibit an elongate, fusiform body that is laterally compressed, with the greatest depth occurring anterior to the dorsal fin origin, facilitating efficient midwater schooling and locomotion. The head is moderate in size, featuring a moderately large eye suited for low-light conditions, an elongate and pointed snout, and a large terminal mouth armed with teeth on the jaws, vomer, and tongue, including fang-like structures in some species for grasping prey. The body is covered with thin, scales that are and easily removed, typically numbering 58 to 75 along the , which runs along the midline for mechanosensory detection of water movements. Fins lack spines and include a soft-rayed positioned posteriorly, a small fleshy adipose fin between the dorsal and caudal fins—a characteristic shared with salmonids—pectoral fins inserted low on the body, pelvic fins without axillary processes, and an anal fin near the ventral margin. The caudal fin is forked, aiding in propulsion. Internally, Osmeridae possess a physostomous swim bladder connected via a pneumatic duct to the esophagus, enabling buoyancy regulation through gas secretion or resorption, which supports their pelagic lifestyle. The gastrointestinal tract is adapted for a carnivorous diet, with a short intestine reflecting their consumption of zooplankton and small fish. Sensory systems include well-developed olfactory organs for detecting spawning cues and a lateral line system enhanced for schooling cohesion. Variations exist across genera, such as larger mouths in Osmerus compared to Hypomesus, but the core anatomical features remain consistent for the family's ecological niche.

Size, Coloration, and Adaptations

Smelts in the family Osmeridae exhibit considerable variation in adult size across species, generally ranging from 5 to 30 cm in total length. For instance, the (Hypomesus transpacificus) typically attains 6-7 cm, with a maximum of 12 cm. In contrast, rainbow smelt (Osmerus mordax) commonly reach 18-23 cm, occasionally up to 25 cm. Surf smelt (Hypomesus pretiosus) grow larger, up to 30 cm in some populations. Coloration among smelts is characteristically silvery, aiding camouflage in pelagic environments, with variations by species and life stage. Rainbow smelt display a pale green or olive dorsum, white venter, and iridescent purple, blue, or pink lateral hues accented by a prominent silvery stripe. Surf smelt feature a light green back, purplish sides, and a dark mid-lateral stripe. Delta smelt are more translucent and uniformly silver. Adaptations in smelts primarily revolve around cold-water tolerance, reflecting their northern distributions. Rainbow smelt physiologically acclimate to subzero conditions by accumulating glycerol as a colligative antifreeze in plasma and tissues, complemented by antifreeze proteins that promote supercooling and inhibit ice crystal growth. This enables survival in near-freezing waters without freezing. Species like European smelt (Osmerus eperlanus) and delta smelt avoid prolonged exposure to temperatures exceeding 20°C and 15°C, respectively, underscoring stenothermal preferences. Their slender, fusiform body morphology facilitates rapid schooling and evasion in open waters.

Habitat and Distribution

Global Geographic Range

The family Osmeridae, known as smelts, is native to the Northern Hemisphere, with a circumpolar distribution centered in temperate to subarctic marine, estuarine, and freshwater habitats of the North Atlantic, North Pacific, and Arctic Oceans. No native Osmeridae species occur in the Southern Hemisphere. In , rainbow smelt (Osmerus mordax) occupy native ranges in Atlantic coastal drainages from the in northward to Lake Melville in , as well as and Pacific drainages from to . (Hypomesus transpacificus) are endemic to the Sacramento-San Joaquin River Delta and in , historically extending upstream to Sacramento and Stockton. (Thaleichthys pacificus) inhabit coastal Pacific waters from the Eel River in to the in , with anadromous runs into rivers like the Columbia and Fraser. Longfin smelt (Spirinchus thaleichthys) and surf smelt (Hypomesus pretiosus) are found along the Pacific coast from to . European smelt (Osmerus eperlanus) are distributed across northern and northwestern Europe, including the British Isles, Baltic Sea, and North Sea basins, with anadromous populations in coastal rivers and landlocked forms in large lakes such as those in Scandinavia. In Asia, Pacific smelt (Osmerus dentex) and pond smelt (Hypomesus olidus) range across the North Pacific Rim, including the Bering Sea, Sea of Okhotsk, and coastal waters of Japan, the Russian Far East, and into Arctic drainages. Wakasagi (Hypomesus nipponensis) are native to Pacific coastal regions of Japan and have been introduced to parts of North America. Certain species, such as rainbow smelt, have been introduced beyond native ranges, including into the Great Lakes basin and inland waters of Scandinavia, but these do not expand the family's core global footprint.

Environmental Preferences and Microhabitats

Smelt species within the Osmeridae family exhibit a strong preference for cold, oxygen-rich waters, typically thriving in temperatures between 0°C and 20°C, with tolerances extending to -1.8°C in some populations. Rainbow smelt (Osmerus mordax), a widespread North American species, demonstrate no strong temperature preference below 15°C but show aversion to waters exceeding this threshold, aligning with their distribution in northern freshwater lakes, coastal marine areas, and anadromous migrations. Similarly, Delta smelt (Hypomesus transpacificus) avoid temperatures above 15–28°C, favoring lower ranges that correlate with their estuarine persistence amid seasonal variability. Salinity tolerance is broad, enabling euryhaline adaptations; many species, including longfin smelt (Spirinchus thaleichthys), occupy fresh to brackish environments (0–30 ppt), though preferences lean toward low-salinity zones during vulnerable life stages. Water clarity and turbidity play roles, with species like Delta smelt associating with higher turbidity for predator avoidance in dynamic deltaic systems. Microhabitats are stage- and season-specific, often pelagic or nearshore. Adults of anadromous species like and European smelt (Osmerus eperlanus) form midwater schools in coastal or estuarine zones, rarely venturing far offshore, and select depths influenced by thermoclines and dissolved oxygen gradients—preferring levels above 5 mg/L to avoid hypoxia. In lacustrine populations, such as landlocked European smelt in Scandinavian lakes, oligotrophic conditions with pristine, low-nutrient profiles predominate, though some tolerate polluted estuaries like the lower River. Juveniles frequent shallower, nearshore shallows or river mouths for foraging, while spawning shifts to freshwater tributaries with gravel-pebble substrates and moderate flows (e.g., 0.1–0.5 m/s for rainbow smelt egg adhesion). These microhabitats mediate seasonal behaviors, with summer retreats to cooler hypolimnetic layers in lakes and winter aggregations in ice-covered shallows, underscoring sensitivity to thermal stratification and oxygenation.

Life History and Ecology

Reproduction and Life Cycle

Smelts in the family Osmeridae typically reproduce through external fertilization, with adults migrating to freshwater streams, rivers, or brackish estuaries for spawning in late winter to spring, triggered by rising water temperatures and often coinciding with snowmelt or ice-out. Most species are broadcast spawners, releasing demersal, adhesive eggs over gravel, sand, or vegetation substrates in shallow, flowing waters; males arrive first and fertilize eggs as females scatter them. Fecundity varies by species and size, ranging from 8,000 to 60,000 eggs per female, with egg diameters of 0.6–0.9 mm. Many individuals exhibit semelparity, dying after spawning, though iteroparity occurs in some populations. In the rainbow smelt (Osmerus mordax), a widespread North American species, spawning peaks at water temperatures of 4–10°C, often at night in lower stream reaches or tidal estuaries; eggs adhere to substrates and hatch in 10–30 days depending on temperature. For the European smelt (Osmerus eperlanus), spawning occurs from February to May in river mouths or lake shallows on sandy-gravel beds, with eggs hatching in 3–5 weeks; post-spawning adults often return to marine or brackish rearing areas. Larvae are initially pelagic, feeding on plankton before transitioning to benthic or schooling juveniles that disperse downstream to estuarine or coastal waters. The life cycle of osmerids is generally short, with maturity reached in 1–6 years depending on environmental conditions and population type (e.g., faster in freshwater-resident forms, slower in anadromous ones). Juveniles grow rapidly on diets of zooplankton and small invertebrates, attaining lengths of 8–18 cm at first maturity; maximum lifespan ranges from 3–6 years, though some populations complete their cycle annually. Anadromous species undertake upstream migrations for spawning, driven by photoperiod and temperature cues, while landlocked forms adapt to lacustrine habitats with similar seasonal patterns. Survival of early stages is highly sensitive to water flow, temperature, and predation, influencing recruitment variability across years.

Diet, Predation, and Trophic Interactions

Smelt species in the family Osmeridae are predominantly planktivorous, with juveniles relying heavily on such as copepods, cladocerans, and rotifers, while adults expand their diet to include amphipods, ostracods, , and occasionally small or mysids. This feeding strategy positions them as mid-trophic level consumers, filtering from pelagic waters in freshwater lakes, coastal marine environments, and anadromous migrations. Dietary composition varies by and ; for instance, rainbow smelt (Osmerus mordax) in the consume calanoid copepods and Mysis diluviana, reflecting opportunistic foraging tied to seasonal plankton blooms. As schooling midwater fish, smelt serve as critical forage for a broad array of predators across aquatic ecosystems, including piscivorous fish like walleye (Sander vitreus), lake trout (Salvelinus namaycush), striped bass (Morone saxatilis), and salmonids such as Atlantic salmon (Salmo salar) and Chinook salmon (Oncorhynchus tshawytscha). Avian predators including terns, gulls, and cormorants, along with marine mammals like harbor seals (Phoca vitulina) and California sea lions (Zalophus californianus), also target smelt schools, particularly during spawning runs when densities peak. Eggs and larvae face intense predation from benthic species such as mummichogs (Fundulus heteroclitus) and sticklebacks (Gasterosteus aculeatus). In trophic networks, smelt bridge primary producers and higher predators, channeling energy from planktonic basal resources to apex consumers and thereby stabilizing food webs in temperate lakes and nearshore marine systems. Their abundance influences predator populations; for example, declines in rainbow smelt have correlated with reduced growth rates in due to forage limitation. Conversely, in invaded ecosystems like parts of the Laurentian , smelt can exert top-down pressure by preying on and competing with native fish, potentially disrupting multi-trophic dynamics. This dual role—as both predator and prey—underscores their sensitivity to perturbations like introductions or climate-driven shifts in availability.

Behavioral Patterns and Migration

Smelt in the family Osmeridae are primarily schooling that form large pelagic aggregations, particularly as juveniles and adults, which facilitates foraging efficiency and predator avoidance. They exhibit distinct diel behavioral patterns, with schools migrating to shallower coastal or nearshore waters at night to feed on and small , then retreating to deeper channels during daylight hours. Migration patterns vary by species and population but often involve anadromous life histories, where adults ascend coastal rivers or streams from marine or estuarine habitats for spawning in early spring. For instance, rainbow smelt (Osmerus mordax) initiate upstream migrations shortly after ice-out, triggered by water temperatures rising to about 4.4°C and peaking near 10°C, typically covering short distances of a few kilometers to gravelly substrates where eggs are broadcast. Post-spawning adults rapidly emigrate back to estuaries and coastal waters, with departures from systems like New Hampshire's Great Bay observed by mid-May. Landlocked populations, such as those in inland lakes, display potamodromous migrations confined to freshwater, running into tributaries for without marine phases. Certain coastal species, like surf smelt (Hypomesus pretiosus), forgo riverine migrations altogether, spawning directly on intertidal beaches in the upper tidal zone during summer months, with peak egg deposition from to . These behaviors underscore adaptations to local , cues, and tidal influences, though disruptions like barriers can impede passage and survival.

Human Interactions

Fishing Methods and Harvesting

Recreational fishing for smelt primarily occurs during spawning migrations, employing dip nets to capture schools in shallow riverine habitats. In Washington, dip-netting for eulachon (a smelt relative often locally termed smelt) on the Cowlitz River requires each participant to actively use a separate net, with all captured fish retained regardless of size or condition, typically during short seasonal openings like March. Similar techniques apply to rainbow smelt runs in northeastern U.S. rivers, where hand-held dip nets target aggregating adults in tributaries. Winter ice fishing uses small jigs or hooks baited with worms, targeting smelt beneath lake ice in regions like the Great Lakes, often at night when fish are active near the bottom. Commercial harvesting of smelt species, such as rainbow smelt (Osmerus mordax), utilizes gillnets and bottom trawls in marine and lacustrine environments. In the Great Lakes, a sustained commercial fishery has operated since the mid-20th century, employing trawls to sieve schools in deeper waters. For surf smelt (Hypomesus pretiosus) along Pacific coasts, beach seining and dip nets predominate, with Washington imposing an annual quota of 60,000 pounds since 2014 to manage stocks. In Maine, permitted gear includes bag nets, gillnets, and hook-and-line, supporting localized landings reported through state fisheries data. Harvesting pressures vary by species and region, with historical commercial catches of Osmeridae documented since 1916 in California, encompassing both true smelts and related taxa until refined reporting. Regulations often limit effort to protect spawning stocks, as excessive dip-netting or gillnetting can deplete runs, prompting quotas and seasonal closures in areas like the U.S. Northeast and Pacific Northwest.

Culinary Uses and Preparation

Smelt fish are prepared and consumed in various cuisines primarily due to their small size, mild flavor, and soft bones that render edible when cooked. The dominant method worldwide involves frying, allowing the fish to be eaten whole after minimal cleaning, such as a simple gutting or none at all for the smallest specimens. Pan-frying or deep-frying after dredging in seasoned flour, cornmeal, or a flour-cornstarch blend is standard, typically taking 2-3 minutes per side in hot oil to achieve a crispy exterior while preserving the delicate interior. Seasonings often include salt, black pepper, garlic powder, or paprika, with frying temperatures around medium heat to prevent overcooking the thin flesh. In Italian traditions, such as the Christmas Eve "fritti di pesce," smelts are quickly fried in olive oil and served as an appetizer, emphasizing simplicity to highlight the fish's natural taste. Asian preparations adapt similar frying techniques with regional twists; for instance, Cantonese-style salt and pepper smelts incorporate fried ginger, scallions, and a spice blend post-frying for enhanced aroma and crunch. In Filipino cuisine, smelts are battered lightly and fried until golden, often paired with vinegar dips. Historically in Europe, particularly with Osmerus eperlanus, smelts served as an affordable protein for lower socioeconomic groups around 1900, fried or boiled simply, though consumption has declined in favor of more marketed species. Less common methods include baking with garlic and herbs or smoking, but these are rarer due to the fish's optimal suitability for high-heat quick cooking that softens bones without toughness. Smelts' low mercury content makes them a safer frequent choice among small oily fish.

Cultural Significance and Festivals

Smelt species, particularly rainbow smelt (Osmerus mordax) in North America, have played a notable role in regional cultures through seasonal fishing runs that draw communities for night-time dipping and frying events, emphasizing their value as an accessible, high-yield food source during spring migrations. In areas like the Great Lakes and Pacific Northwest, these runs historically supported local economies and social gatherings, with techniques such as light-attracting dips using lanterns symbolizing ingenuity in harvesting translucent schools visible in shallow waters. European smelt (Osmerus eperlanus) similarly underpin traditions in , where they serve as a cultural emblem in regions like , , designated as the provincial fish since 1992 due to longstanding gastronomic ties, though consumption has declined amid changes. In , ancestral methods persist, including ice hammering and singing to vibrate and lure through frozen waters, reviving pre-industrial practices during winter festivals. Russian communities around the River and celebrate smelt (koryushka) migrations with events highlighting their silvery abundance as a seasonal . Notable festivals underscore these traditions:
  • Lewiston Smelt Festival (New York, USA): Held annually in late May at Academy Park, featuring fried smelt from Niagara River stocks, live music, and community dining to mark seasonal fishing heritage.
  • Magic Smelt Parade (Duluth, Minnesota, USA): An annual spring event along Lake Superior, parodying smelt runs with cardboard fish effigies, crowning a "Smelt Queen," and evoking historical night netting amid declining populations.
  • Smeltania Festival (Boyne City, Michigan, USA): Revived biennially in February, commemorating early 20th-century smelt processing booms that transformed the town into a hub, with runs, fries, and historical exhibits.
  • Palanga Smelt Festival (Lithuania): Winter gathering on the Baltic coast with fish fairs offering prepared smelt dishes, ice fishing demonstrations, and market stalls along Basanavičius Avenue.
These events, often tied to ecological cycles, reflect smelt's role in fostering communal identity, though participation has waned with fishery declines from overharvest and invasives.

Conservation and Management

Population Status Across Species

The delta smelt (Hypomesus transpacificus), endemic to the Sacramento-San Joaquin Delta in California, is classified as endangered under both the U.S. Endangered Species Act and California's Endangered Species Act, with populations having declined precipitously since the 1980s due to habitat alteration, entrainment in water diversions, and invasive species competition. Recent monitoring by the Interagency Ecological Program's Smelt Larva Survey detected zero delta smelt in 2025, indicating functional extirpation in the wild despite ongoing captive breeding and release efforts totaling over 48,000 cultured individuals by early 2025. The rainbow smelt (Osmerus mordax), native to Atlantic coastal waters of but introduced to the and inland systems, holds a Least Concern status on the , reflecting its adaptability and successful establishment in non-native habitats where it has become abundant. However, native populations in regions like the and exhibit long-term declines, with commercial landings dropping significantly since the and spawning runs weakening over the past 15-20 years, attributed to habitat degradation, predation, and climate influences. European smelt (Osmerus eperlanus), distributed across European coastal and estuarine waters with landlocked populations in larger lakes, is assessed as Least Concern globally by the IUCN, supported by its wide range and resilience in oligotrophic environments. Local populations, however, face pressures; in , 7 of 21 historical sites are considered extinct as of assessments around 1999, with ongoing scarcity linked to , barriers to migration, and reducing suitable spawning gravels. The longfin smelt (Spirinchus thaleichthys) in the Bay-Delta distinct population segment was listed as endangered under the U.S. Act in July 2024, following decades of biomass reductions exceeding 99% from historical levels, driven by similar factors as including water exports and altered hydrodynamics. (Mallotus villosus), a boreal smelt dominant in North Atlantic and Arctic forage webs, lacks an IUCN evaluation but experiences pronounced boom-bust cycles influenced by oceanographic shifts, with stocks undergoing four major biomass collapses between 1980 and 2016 due to predation and warming, and Newfoundland-Labrador populations crashing in the amid regime changes.
SpeciesIUCN StatusKey Population Trends
Delta smelt (H. transpacificus)Not assessed (endangered per USFWS/CDFW)Near-zero wild detections in 2025 surveys; >99% decline since 1970s.
Rainbow smelt (O. mordax)Least ConcernStable/invasive in ; native declines in Northeast U.S.
European smelt (O. eperlanus)Least ConcernWidespread but local extirpations in ; vulnerable to .
Longfin smelt (S. thaleichthys, Bay-Delta DPS)Not assessed (endangered per USFWS)99%+ biomass loss; recent federal listing.
(M. villosus)Not EvaluatedCyclic collapses in Atlantic stocks from predation/environmental drivers.

Primary Threats and Ecological Pressures

Smelt populations face multiple anthropogenic threats, including habitat alteration from water diversion and altered hydrology, which disrupt spawning and rearing grounds. In the Bay-Delta, entrainment of larval and juvenile (Hypomesus transpacificus) into water export pumps has contributed to population declines since the 1980s, with federal assessments identifying this as a primary factor in the species' endangered status. Similarly, reduced freshwater outflows from dams and reservoirs have compressed suitable low-salinity habitats, exacerbating vulnerability during droughts, as evidenced by modeling showing range contraction under projected climate scenarios. Invasive species pose significant ecological pressures through competition and predation. Non-native fishes, such as the introduced Japanese smelt (Hypomesus nipponensis), have displaced native populations in systems like California's Delta and China's Lake Erhai by outcompeting for resources and altering food webs. For Bay-Delta longfin smelt (Spirinchus thaleichthys), recently listed as endangered in 2024, nonnative predators and competitors intensify declines amid hydrological changes. Climate-driven changes, including warming waters and increased salinity, further stress smelt physiology and distribution. Delta smelt exhibit reduced tolerance to elevated temperatures above 20°C and salinities beyond 10 ppt during early life stages, correlating with observed abundance drops during prolonged droughts. Rainbow smelt (Osmerus mordax) populations in the and Atlantic basins have undergone steep declines due to combined pressure, loss from , and spawning site degradation, leading to local extirpations in some areas. Disease outbreaks, such as microsporidian parasites in European smelt (Osmerus eperlanus), have caused mass mortalities and shifts in population structure in invaded ranges.
Threat CategoryExamples Across Smelt SpeciesKey Impacts
Habitat AlterationWater diversions, reduced outflowsEntrainment losses, compressed rearing habitat
Invasive SpeciesJapanese smelt, nonnative predatorsCompetition, predation, food web disruption
Climate EffectsWarming, salinity shiftsPhysiological stress, range contraction
Other PressuresPollution, fishing, diseaseSpawning habitat loss, hybridization, mortalities

Controversies in Regulation and Policy

The delta smelt (Hypomesus transpacificus), listed as threatened under the U.S. Endangered Species Act on March 5, 1993, has driven contentious federal and state policies governing water exports from California's Sacramento-San Joaquin Delta. Biological opinions, such as the U.S. Fish and Wildlife Service's 2008 assessment, impose operational restrictions on the Central Valley Project and State Water Project pumps to reduce entrainment of larval and juvenile smelt, limiting exports during fall and winter when the species is vulnerable. These measures, enforced through the Endangered Species Act's consultation requirements, have reduced Delta outflows and pumping capacities by up to 5,000 cubic feet per second in critical periods, prioritizing fish passage over full water deliveries to agricultural and municipal users. Legal challenges have repeatedly tested these policies, with water agencies and farmers suing under claims of arbitrary agency action and insufficient economic analysis. In San Luis & Delta-Mendota Water Authority v. Locke (2014), the Ninth Circuit Court of Appeals upheld the 2008 biological opinion's pumping limits, rejecting arguments that they violated the Endangered Species Act by inadequately addressing smelt salvage data or alternative operations. Earlier, in 2007, U.S. District Judge Oliver Wanger issued injunctions halting winter pumping, citing risks to smelt survival amid declining populations indexed at historic lows (from over 1,000 in the 1970s to fewer than 10 by the 2010s via Department of Fish and Wildlife surveys). Critics, including the , have argued these rulings impose unconstitutional burdens by regulating intrastate water use under federal commerce powers, while economic studies quantify losses from curtailed exports at $1.2–$1.6 billion in annual agricultural revenue and 60,000–80,000 jobs in the Central Valley. Policy debates intensified under the Trump administration, which in a January 20, 2025, memorandum directed agencies to revise Endangered Species Act implementations favoring "," explicitly targeting protections blamed for diverting billions of gallons southward during droughts. Agricultural advocates assert that smelt declines persist despite restrictions—attributable more to predation (e.g., overbite bass introduced in the 1970s) and pelagic disruptions from non-native clams than pumping, as entrainment salvage rates average under 1% of exports annually. Environmental organizations like the Natural Resources Defense Council counter that relaxing safeguards would accelerate extinction, emphasizing peer-reviewed evidence linking export pulses to smelt displacement, though recovery plans remain stalled with no delisting criteria met after three decades. These disputes highlight tensions between empirical population data showing minimal recovery and regulatory mandates, with state-level protections under California's Endangered Species Act adding layers of compliance since 1993.

Recovery Efforts and Management Strategies

Recovery efforts for delta smelt (Hypomesus transpacificus), an endemic to the Sacramento-San Joaquin Delta, center on habitat restoration, adaptive water management, and population supplementation. The U.S. Fish and Wildlife Service (USFWS) finalized a recovery plan in 1996 as part of the broader Sacramento-San Joaquin Delta Native Fishes Recovery Plan, which identifies actions such as restoring shallow-water habitats, reducing entrainment losses from water diversions, and conducting research on life history to support delisting. In 2016, the State of issued the Resiliency Strategy, a voluntary science-based framework emphasizing rapid improvements in water flow regimes, contaminant reduction, and enhancement to bolster spawning and rearing conditions. Complementary initiatives include the construction of four tidal restoration sites in 2018 by the California Department of Water Resources, designed to recreate historical mosaics conducive to smelt foraging and refuge. Population supplementation programs represent a key management strategy for delta smelt, involving captive rearing and release to augment wild stocks. Initiated under USFWS oversight around 2020, these efforts include marking hatchery-reared juveniles with tags or otolith marks, followed by monitoring recaptures to assess survival and dispersal; multiple tag types are evaluated to optimize tracking efficacy. The Delta Smelt Action Plan, coordinated by interagency teams including USFWS and NOAA Fisheries since 2005, facilitates real-time decisions on pump operations and outflows to minimize mortality during vulnerable life stages, integrating empirical data from trawl surveys. For the San Francisco Bay-Delta distinct population segment of longfin smelt (Spirinchus thaleichthys), recently listed as endangered in July 2024, recovery outlines emphasize to sustain populations amid hydrological alterations. The USFWS's 2024 Recovery Outline proposes refining water project operations, enhancing estuarine habitat connectivity, and implementing monitoring protocols to inform flexible strategies that balance smelt persistence with regional water needs. These efforts build on Endangered Species Act (ESA) consultations to mitigate threats like altered gradients, with a focus on empirical validation through ongoing surveys. Management for rainbow smelt (Osmerus mordax), classified as a NOAA Species of Concern since 2004, varies by region and population status, prioritizing monitoring over intensive recovery due to its broader distribution and occasional invasive role. In the U.S. , a multi-state regional conservation plan, developed collaboratively since 2012, targets anadromous runs through standardized protocols for assessing spawning in 15 rivers, including measurements of water temperature, dissolved oxygen, and nutrient levels to guide protection measures. Indirect population assessments, such as salmonid diet analysis and annual run observations, inform Maine's smelt management plan, which restricts commercial harvests to sustain forage roles in coastal ecosystems. Across jurisdictions, strategies incorporate stock assessments to differentiate native conservation from control in invaded systems like the .

References

  1. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=34368
  2. https://nas.er.usgs.gov/queries/factsheet.aspx?SpeciesID=796
  3. https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/osmeridae
  4. https://www.fishbase.se/summary/FamilySummary.php?ID=80
  5. https://spo.nmfs.noaa.gov/sites/default/files/pdf-content/fish-bull/fb42.11.pdf
  6. https://caseagrant.ucsd.edu/seafood-profiles/surf-smelt
  7. https://wildlife.ca.gov/Conservation/Fishes/Delta-Smelt
  8. http://www.marinespecies.org/aphia.php?p=taxdetails&id=125513
  9. https://www.fws.gov/species/delta-smelt-hypomesus-transpacificus
  10. https://marinespecies.wildlife.ca.gov/surf-smelt/the-species/
  11. https://www.fisheries.noaa.gov/species/eulachon
  12. https://www.burkemuseum.org/static/FishKey/osmer.html
  13. https://pubmed.ncbi.nlm.nih.gov/20198883/
  14. https://link.springer.com/article/10.1134/s1022795410010114
  15. https://www.sciencedirect.com/science/article/abs/pii/S1055790308005149
  16. https://www.tandfonline.com/doi/full/10.1080/02724634.2024.2445684
  17. https://open.library.ubc.ca/soa/cIRcle/collections/ubctheses/24/items/1.0066172
  18. https://pubmed.ncbi.nlm.nih.gov/12535084/
  19. https://www.sci.news/paleontology/ferruaspis-brocksi-13757.html
  20. https://www.fishbase.se/summary/Osmerus-mordax.html
  21. http://cybrary.fomb.org/fgom/Osmerus_mordax.htm
  22. https://nas.er.usgs.gov/queries/greatlakes/FactSheet.aspx?Species_ID=3649&Potential=Y&Type=2&HUCNumber=DGreatLakes
  23. https://dnr.illinois.gov/education/wildaboutpages/wildaboutfishes/wafsmelt.html
  24. https://www.fishbase.se/summary/Osmerus-eperlanus.html
  25. https://www.fishbase.se/identification/SpeciesList.php?genus=Osmerus
  26. https://www.aquariumofpacific.org/onlinelearningcenter/species/delta_smelt
  27. https://seagrant.psu.edu/resources/resource-item/rainbow-smelt-ais-fact-sheet/
  28. https://wdfw.wa.gov/sites/default/files/publications/01219/wdfw01219.pdf
  29. https://ca.water.usgs.gov/pubs/2016/Brown_delta-smelt-life-decline_2016.pdf
  30. https://pmc.ncbi.nlm.nih.gov/articles/PMC3603416/
  31. https://journals.biologists.com/jeb/article/205/10/1419/8942/The-freeze-avoidance-response-of-smelt-Osmerus
  32. https://www.journals.uchicago.edu/doi/abs/10.1086/499981
  33. https://www.nature.com/articles/s41598-022-20934-w
  34. https://www.canada.ca/en/environment-climate-change/services/species-risk-public-registry/cosewic-assessments-status-reports/rainbow-smelt-2018.html
  35. https://encyclopediaofarkansas.net/entries/smelts-13936/
  36. https://www.srs.fs.usda.gov/pubs/chap/chap_2019_warren_018.pdf
  37. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.934507/Osmerus_mordax
  38. https://ecos.fws.gov/docs/species/uplisting/doc4746.pdf
  39. https://www.fws.gov/sites/default/files/documents/Ecological-Risk-Screening-Summary-European-Smelt.pdf
  40. https://www.researchgate.net/figure/Geographic-localization-sample-sizes-and-symbols-of-the-Osmerus-smelts_tbl1_226173566
  41. https://pubmed.ncbi.nlm.nih.gov/36192440/
  42. https://deltacouncil.ca.gov/pdf/science-program/review-documents/2024-01-16-chapter-9-delta-smelt.pdf
  43. https://www.fishbase.se/summary/osmerus-eperlanus.html
  44. https://www.mass.gov/doc/appendixg1pdf/download
  45. https://adfg.alaska.gov/index.cfm?adfg=rainbowsmelt.printerfriendly
  46. https://www.sciencedirect.com/science/article/abs/pii/S0165783698001568
  47. https://academic.oup.com/fisheries/article/50/2/52/7984374
  48. https://www.sciencedirect.com/science/article/abs/pii/S157495412100279X
  49. https://www.maine.gov/ifw/docs/strategic-management-plans/smelt.pdf
  50. http://cybrary.friendsofmerrymeetingbay.org/pages/20060000_ADFG_Rainbow_smelt_final.pdf
  51. https://pubmed.ncbi.nlm.nih.gov/38769029/
  52. https://wdfw.wa.gov/sites/default/files/publications/01497/wdfw01497.pdf
  53. https://www.ontario.ca/files/2025-07/stdprod-104405.pdf
  54. https://onlinelibrary.wiley.com/doi/abs/10.1002/rra.3176
  55. https://wdfw.wa.gov/fishing/regulations/smelt
  56. https://seagrant.umaine.edu/maine-seafood-guide/smelt/
  57. https://1source.basspro.com/news-tips/fishing-information/6570/smelt-fishing-tackle-and-techniques
  58. https://www.kawalingpinoy.com/crispy-fried-smelt-fish/
  59. https://www.allrecipes.com/recipe/236481/fried-smelts/
  60. https://girlheartfood.com/fried-smelt-recipe/
  61. https://fultonfishmarket.com/blogs/recipes/fried-smelt-recipe
  62. https://mangiawithmichele.com/fried-smelts/
  63. https://mortadellahead.com/how-to-make-crispy-italian-style-smelts-fritti-recipe/
  64. https://thewoksoflife.com/salt-pepper-fried-smelts/
  65. https://www.sciencedirect.com/science/article/pii/S1878450X24001513
  66. https://journalofethnicfoods.biomedcentral.com/articles/10.1186/s42779-019-0025-3
  67. https://boldappetite.com/light-crispy-fried-smelt/
  68. https://www.themeateater.com/fish/freshwater/smelt-camp-a-deep-fried-maine-tradition
  69. https://tdn.com/news/local/dipping-into-history-smelt-dipping-has-a-long-past-on-cowlitz-river-the-candlefish-that/article_95c672e6-1a4a-516c-a6c6-4437ead1819f.html
  70. https://www.facebook.com/groups/forgottenchicago/posts/10159216181529520/
  71. https://www.interlochenpublicradio.org/2023-03-08/smelt-the-fish-that-made-beulah-famous
  72. https://apnews.com/general-news-f954d0af030143b18b09c6ba728df047
  73. https://www.fondazioneslowfood.com/en/ark-of-taste-slow-food/koryushka-2/
  74. https://www.wnypapers.com/news/article/2025/05/16/163144/summer-starts-with-lewiston-smelt-fest
  75. https://artsmidwest.org/stories/smelt-parade-duluth/
  76. https://www.northernexpress.com/news/feature/smeltania-lives/
  77. https://www.lrt.lt/en/news-in-english/19/2481052/palanga-hosts-traditional-smelt-festival
  78. https://www.ellsworthamerican.com/announcements/smelt-fry-activities-planned-for-april-26/article_203bf8a6-e1b0-4d13-aa5a-2904c1e8b071.html
  79. https://www.facebook.com/groups/welovesmichigan/posts/1106290638235604/
  80. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=237865
  81. https://www.usbr.gov/mp/bdo/docs/01072025-samt-assessment-final.pdf
  82. https://www.maine.gov/dmr/sites/maine.gov.dmr/files/docs/pamphlet.pdf
  83. https://www.wildlife.nh.gov/sites/g/files/ehbemt746/files/documents/smelt-enhancement-movement.pdf
  84. https://publications.naturalengland.org.uk/file/132017
  85. https://canalrivertrust.org.uk/things-to-do/fishing/caring-for-our-fish/rare-and-protected-fish/smelt
  86. https://www.fws.gov/press-release/2024-07/us-fish-and-wildlife-service-lists-bay-delta-longfin-smelt-endangered
  87. https://www.fishbase.se/summary/Mallotus-villosus.html
  88. https://academic.oup.com/icesjms/article/81/8/1584/7728837
  89. https://www.dfo-mpo.gc.ca/species-especes/profiles-profils/capelin-capelan-eng.html
  90. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0146724
  91. https://www.federalregister.gov/documents/2024/07/30/2024-16380/endangered-and-threatened-wildlife-and-plants-endangered-species-status-for-the-san-francisco
  92. https://pmc.ncbi.nlm.nih.gov/articles/PMC7442155/
  93. https://www.researchgate.net/publication/230040062_The_effects_of_environmental_factors_on_rainbow_smelt_Osmerus_mordax_embryos_and_larvae
  94. https://ecos.fws.gov/ecp/species/321
  95. https://earthjustice.org/document/court-decision-court-upholds-protections-of-california-bay-delta-fish-species-on-the-brink-of-extin
  96. https://cdn.ca9.uscourts.gov/datastore/opinions/2014/12/22/12-15144.pdf
  97. https://www.courthousenews.com/feds-sued-over-risk-to-smelt-by-water-pumps/
  98. https://www.waterboards.ca.gov/waterrights/water_issues/programs/hearings/usbr_dwr/docs/are_study.pdf
  99. https://www.sjcl.edu/images/stories/sjalr/volumes/V19N1C3.pdf
  100. https://www.whitehouse.gov/presidential-actions/2025/01/putting-people-over-fish-stopping-radical-environmentalism-to-provide-water-to-southern-california/
  101. https://californiawaterblog.com/2024/08/11/the-delta-smelt-controversy-in-sociological-perspective/
  102. https://www.valleyagvoice.com/the-problem-with-misrepresenting-science/
  103. https://www.nrdc.org/bio/doug-obegi/red-herrings-and-delta-smelt
  104. https://water.ca.gov/-/media/DWR-Website/Web-Pages/Programs/State-Water-Project/Files/DEIR-Long-Term-Ops/2024/App6A_Aquatic-Species-Life-Histories_508.pdf
  105. https://www.waterboards.ca.gov/waterrights/water_issues/programs/bay_delta/california_waterfix/exhibits/docs/swrcb_89.pdf
  106. https://www.epa.gov/sites/default/files/2013-08/documents/delta-smelt_0.pdf
  107. https://cawaterlibrary.net/document/delta-smelt-resiliency-strategy/
  108. https://water.ca.gov/News/Blog/2019/May-2019/Operation-smelt-recovery
  109. https://www.fws.gov/project/delta-smelt-supplementation
  110. https://water.ca.gov/-/media/DWR-Website/Web-Pages/Programs/State-Water-Project/Files/DEIR-Long-Term-Ops/2024/App2E_Delta-Smelt-Supplementation-Strategy_508.pdf
  111. https://www.baydeltalive.com/assets/application/pdf/10-19-05DeltaSmeltActionPlan.pdf
  112. https://ecos.fws.gov/docs/recovery_plan/LFS_Recovery_Outline_Final_20241018_CLEAN%2520.pdf
  113. http://www.maine.gov/dmr/science/species-information/smelt
  114. http://cybrary.fomb.org/pages/20120312%2520smelt-conservation-plan.pdf
  115. https://www.maine.gov/dmr/sites/maine.gov.dmr/files/docs/B2%2520-%2520Rainbow%2520Smelt%2520Informational%2520Pamphlet%2520-%2520Monitoring%2520Protocols.pdf
  116. https://www.greateratlantic.fisheries.noaa.gov/public/public/web/NEROINET/Protected/pcp/soc/rainbow_smelt.html
Add your contribution
Related Hubs
User Avatar
No comments yet.