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Meteor goldfish
Meteor goldfish
Meteor goldfish
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Meteor goldfish
TypeNo tail
Classification
BAS[1]
External image
image icon Purported photo of a meteor goldfish

The meteor goldfish is considered the rarest breed of goldfish. They are a tailless form thought to have been developed by goldfish breeders during the late 19th or early 20th century.[1][2][3] The meteor goldfish lack a tail fin, but have a well-developed anal fin in its position.[4] The other fins of the meteor goldfish are elongated, and it is a competent swimmer despite its lack of a tail. Few swim like other normal goldfish and few swim straight ahead like a rocket, the rocket swimming being rarer. The meteor is also one of the hardest to breed, as they can be very weak, and in low temperatures sicken easily.[5]

References

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Meteor goldfish

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The Meteor goldfish is an exceptionally rare variety of fancy (Carassius auratus), notable for its complete absence of a caudal (tail) fin, which results in a streamlined, bullet-like body propelled primarily by elongated dorsal, anal, and paired fins. This tailless form was first documented in the early as an aberrant outcome of for increasingly elaborate tail structures in other fancy goldfish breeds. Originating from efforts by European and American s in the late 19th and early 20th centuries, the Meteor emerged as a genetic "perversion" during crosses aimed at producing long, flowing tails, such as those seen in varieties like the or fringed-tail . William T. Innes, a pioneering , described it in 1917 as a with well-developed fins except for the tail, capable of active despite its unusual morphology. Historical records indicate it was occasionally exhibited in aquaria shows but never established as a stable breed, leading to its presumed by the mid-20th century. Long considered an urban legend or mere illustration without living counterparts, the Meteor goldfish gained renewed attention in early 2024 when two tailless goldfish—nicknamed Chicken Nugget and Tater Tot—were discovered in a private pond in the United States, exhibiting traits closely matching Innes's description. As of 2025, the fish remain healthy and have sustained online popularity through social media. Experts suggest these may represent spontaneous mutations or feral hybrids rather than a revived pure breed, as no verified breeding lines exist today, underscoring ongoing ethical concerns about breeding for extreme traits that compromise fish welfare. Despite its obscurity, the Meteor exemplifies the boundless creativity and risks in goldfish domestication, which has produced over 200 varieties since the species's origins in ancient China.

Overview

Definition and Rarity

The Meteor goldfish refers to a rare, tailless form of the domesticated goldfish (Carassius auratus), historically noted for its complete absence of a caudal fin, distinguishing it from typical goldfish varieties. This tailless form is mentioned in resources of the Bristol Aquarists' Society (BAS) as a fish lacking a tail, potentially arising as a spontaneous mutation during selective breeding for fin variations, though it is not included in official goldfish show standards. The form's body retains the typical streamlined shape of single-tailed goldfish, with elongated dorsal, anal, and paired fins providing balance and mobility. Regarded as among the rarest goldfish forms, the has historically been exceedingly uncommon, even at the height of its brief documentation in the early , often appearing as an anomalous "perversion" in breeding lines aimed at developing elaborate finnage. No verified breeding populations exist today, and recent sightings of tailless specimens—for example, two discovered in a U.S. in early 2024—have sparked debate over whether they represent true historical Meteors or injury-induced anomalies or spontaneous mutations, underscoring its near-extinct status. Historical evidence for the form relies exclusively on textual accounts and line drawings in period aquarist publications, as no photographic records have ever surfaced. Despite the absence of a tail, Meteor goldfish demonstrate competent swimming capabilities, leveraging their well-developed anal and other fins for propulsion and stability. Some historical descriptions note specimens capable of "rocket-like" straight-line movement, though such efficient locomotion remains exceptional even within the limited records.

Relation to Other Goldfish Varieties

The Meteor goldfish represents a unique single-tailed (or more precisely, tailless) fancy form within the broader taxonomy of goldfish varieties (Carassius auratus), distinguishing it from the prevalent double-tailed fancy varieties such as orandas and ryukins, which feature split caudal fins and more rounded body shapes adapted for ornamental display. In contrast to the streamlined, single-tailed common varieties like comets and shubunkins, which prioritize endurance and speed in outdoor ponds, the Meteor's tailless morphology places it among the rarer fancy types, though it retains a relatively elongated body form rather than the compact, egg-like proportions of breeds such as fantails or ranchu. Key comparisons highlight the Meteor's adaptive differences: while standard comet goldfish rely on a deeply forked tail for agile swimming and predator evasion in open water, the Meteor compensates for its absent caudal fin through notably elongated pectoral and anal fins, enabling competent propulsion despite the structural anomaly. This fin configuration sets it apart from other fancies, where double tails often lead to slower, more deliberate movements suited to aquariums, and underscores its position as an outlier in goldfish breeding, blending elements of both streamlined and ornamental lineages without the rounded, buoyancy-focused body of egg-shaped varieties. The genetic foundation of the Meteor goldfish is attributed to a caudal finless documented in lineages, rather than any hybridization with ( carpio), preserving its pure Carassius auratus heritage amid efforts. This , first noted in historical breeding records, contributed to its limited propagation, as the resulting fragility—stemming from compromised swimming efficiency and heightened disease susceptibility—prevented widespread adoption in competitive exhibitions or commercial lines.

Physical Characteristics

Body Structure and Fins

The Meteor goldfish exhibits a distinctive body structure characterized by an egg-shaped form typical of fancy varieties, which contrasts with the more elongated bodies of common types. This compact, rounded physique supports its overall morphology while adapting to the absence of a standard fin. A defining feature is the complete lack of a caudal () fin, a rare that renders it tailless and gives it a streamlined, rocket-like appearance despite the rounded body. In its place, a well-developed anal serves as the primary means of propulsion, functioning similarly to a rudder for steering and forward thrust. The is notably large and elongated, extending along much of the back to provide stability during movement, while the pectoral and pelvic fins are also extended, contributing to balance and additional maneuverability. Swimming in the Meteor goldfish relies on undulating motions of the body combined with rhythmic movements of the anal, pectoral, and pelvic fins, enabling it to navigate ponds or tanks effectively despite the missing tail. This results in a unique, somewhat erratic style often described as meteor-like, allowing competent but less powerful locomotion compared to tailed . Some specimens may display minor asymmetries in fin development, which are inherent to the breed rather than signs of injury.

Coloration and Size

Meteor goldfish exhibit coloration similar to that of varieties, predominantly featuring a metallic orange-red hue that provides a vibrant, iridescent appearance. Rare individuals may display patterns with mottled combinations of red, blue, black, and white, or nacreous scales that scatter light for a pearlescent effect, though no unique or breed-specific patterns have been consistently documented in historical or recent specimens. The scales are typically smooth and metallic, contributing to the fish's reflective sheen, with occasional mutations producing matte varieties that lack the typical luster. Due to the extreme rarity of the Meteor goldfish, detailed size information is limited. Like other fancy varieties, juveniles are small at , and adults typically reach moderate lengths, though growth is often constrained by genetic vulnerabilities and fragility. This results in specimens that are generally smaller than more robust pond-adapted varieties, such as comets. Growth in meteor is significantly influenced by , including stable , pH levels, and low concentrations, which support healthy development despite the breed's fragility. However, their to weakness often leads to slower maturation and reduced maximum size compared to hardier relatives, emphasizing the need for careful husbandry to mitigate stunting.

History and Development

Origins and Early Breeding

The Meteor originated as a spontaneous during experiments with varieties in the late 19th century, likely arising from efforts to produce elaborate long fins in fancy forms. Breeders initially viewed the tailless as an anomaly or "freak," but its distinctive streamlined body—featuring prominent dorsal, pectoral, and pelvic fins alongside a single anal —prompted further interest for its potential in exhibition settings. This parallels other fin-related variations in , such as those seen in or common varieties, but the complete absence of a caudal set it apart. The trait was fixed through over a few generations. By the early , unnamed aquarists in and had begun purposeful to stabilize the trait, crossing specimens to produce consistent offspring despite challenges in and vigor. The variety's development was gradual, spanning generations of careful pairing to refine its torpedo-like shape, which allowed surprisingly agile swimming through undulating body movements and fin propulsion. Historical records suggest these efforts occurred amid broader goldfish breeding booms in and the , where fanciers imported Asian stock and innovated new forms. Early documentation appears in aquarist publications, with William T. Innes providing one of the earliest detailed accounts in his 1917 book Goldfish Varieties and Tropical Aquarium Fishes, where he describes the Meteor as a viable show capable of competing despite its unconventional anatomy. Innes highlighted its emergence from long-fin breeding programs and included an original illustration by Franklin Barrett, underscoring its recognition in competitive exhibitions by the . These minor successes in shows, such as those at horticultural societies, demonstrated the variety's appeal, though breeding required specialized conditions to ensure survival rates. No photographic evidence survives from this period, relying instead on textual and artistic depictions in journals.

Decline and Near-Extinction

The Meteor encountered profound breeding difficulties that hindered its propagation, as the distinctive tailless trait was rarely heritable across generations, resulting in low survival rates among . This genetic instability made inconsistent and labor-intensive, ultimately discouraging sustained efforts by aquarists. Compounding these issues were the breed's health vulnerabilities, particularly its susceptibility to infections affecting remaining structures and weakened immune responses in cooler temperatures, which slowed and increased risks of bacterial and fungal threats in varieties. Fancy varieties like the Meteor, with their altered body forms, were especially prone to such complications, as lower temperatures exacerbated disease progression. World War II disrupted ornamental fish breeding in Japan, with goldfish ponds converted to rice paddies or carp cultivation for food production. Interest in the fragile Meteor subsequently waned amid a broader decline in breeding fragile varieties. By the 1950s, the Meteor goldfish was widely regarded as extinct, supported only by sporadic anecdotal reports amid a complete absence of photographic or breeding evidence, which cemented its reputation as an urban legend within aquarist communities.

Care and Maintenance

Habitat and Tank Requirements

Due to the extreme rarity of Meteor goldfish and the absence of established breeding lines, specific care requirements are not well-documented and are extrapolated from guidelines for other fancy goldfish varieties. Recent 2024 specimens, such as the tailless goldfish nicknamed and Tater Tot discovered in a private pond, have been successfully acclimated to aquarium tanks, suggesting compatibility with standard fancy goldfish setups. A spacious aquarium is recommended to support their streamlined body and active swimming, with a minimum of 20 gallons for a single adult to allow movement and . Robust is crucial to handle waste production and maintain at 68-75°F (20-24°C). Ideal water parameters include a pH of 7.0-8.0 and zero and levels to avoid toxicity. Weekly partial water changes of about 25% help replicate natural conditions and prevent harmful accumulations that could affect their delicate . Tank design should feature open swimming space to accommodate their tailless propulsion via elongated fins, with optional hardy or shelters for security, avoiding overcrowding. Overstocking should be prevented to reduce risk and stress. Meteor goldfish are considered peaceful and may share tanks with other , though their unusual swimming could provoke minor interactions, requiring observation.

Health Considerations and Breeding Challenges

Historical accounts describe Meteor goldfish as having a fragile constitution, making them vulnerable to common fancy ailments, compounded by their tailless morphology. They may be susceptible to ich (), a parasite causing white spots, and disorders leading to problems due to body structure. Symptoms include lethargy, frayed fins, and erratic swimming. This vulnerability contributed to their early decline. Prevention involves quarantining new fish for at least two weeks. For treatments, aquarium salt baths (1 tablespoon per gallon for 10-30 minutes) can address parasites, while ensuring oxygen levels exceed 6 mg/L. Severe cases may require medications like malachite green alongside water changes. Breeding poses major difficulties due to genetic instability, physical weaknesses, and historically low success, leading to inconsistent offspring and high mortality. Spawning attempts would need a dedicated at 75-80°F (24-27°C), with high-protein conditioning, but eggs require separation from adults. Fry care demands precise conditions, though inheritance of traits is unreliable. Ethical debates highlight welfare issues from extreme traits causing mobility problems and , with many deformities possibly environmental rather than heritable. No verified breeding programs exist as of 2025.

Recent Rediscoveries

The 2024 Viral Cases

In early 2024, two tailless named and Tater Tot were discovered in a backyard pond in by an individual known online as user "heavypickle99," who was cleaning the pond at a client's request. The , noted for their unusual appearance resembling elongated bodies with minimal fins, were initially at risk of being culled due to perceptions of abnormality, prompting the discoverer to them and bring them home. The discovery quickly gained viral attention after photos were posted on , where aquarists and enthusiasts identified the fish as closely matching historical descriptions of the rare Meteor goldfish variety, a long considered nearly extinct or mythical. The story spread across platforms, including under the account @chickennuggetandtatertot, amassing significant online engagement and followers interested in their care and development. The fish have since thrived in dedicated home aquariums, with the owner expressing no intention to them, prioritizing their over efforts. Media coverage, including features in , highlighted their adjustment to and growing personalities. Verification of their classification faced challenges, with initial skepticism attributing their taillessness to birth defects, injuries, or possible hybrid origins such as -koi crosses rather than a pure lineage. However, observations of their development and overall aligned with sparse early 20th-century accounts of goldfish, fueling discussions on their authenticity despite the breed's poor historical documentation and absence from modern breeding programs.

Implications for Conservation and Study

The 2024 discoveries of tailless resembling the meteor variety have prompted calls among aquarists and researchers for to determine the of the observed mutations. Such could clarify whether the tailless stems from a stable genetic variant, as seen in some fancy morphologies, or from environmental factors like injury or infection, thereby informing potential revival efforts through . Conservation ethics surrounding the meteor goldfish center on debates over propagating breeds with inherent health risks, particularly mobility impairments from tail absence that could lead to suffering or reduced lifespan. Studies on fish deformities, such as those in where taillessness was linked to non-heritable causes like bacterial infections rather than , underscore the need to prioritize over rarity in breeding decisions. Organizations like the Universities Federation for Animal Welfare (UFAW) highlight similar issues in other fancy varieties, such as the tosakin's compromised caudal , advocating against that exacerbates deformities. The rediscoveries have boosted community interest in rare goldfish varieties, with online discussions generating widespread engagement and speculation about authenticity. The Bristol Aquarists' Society has urged caution, emphasizing the lack of verified lineage or photographic evidence prior to 2024, viewing the as potentially a persistent rather than a confirmed . Looking ahead, confirmation of the meteor's genetic distinctiveness through could lead to reclassification as a viable fancy variety, though modern aquatics increasingly stress welfare standards over aesthetic novelty to avoid ethical pitfalls in . Selective breeding protocols, informed by genomic resources, would be essential for any revival to ensure viability without perpetuating vulnerabilities.

References

  1. https://archive.org/details/goldfishvarietie00inne/page/38/mode/2up
  2. https://www.mentalfloss.com/animals/fish/rare-meteor-goldfish-urban-legend-rediscovered
  3. https://www.instagram.com/chickennuggetandtatertot/
  4. https://www.sciencedirect.com/science/article/pii/S0960982220305480
  5. https://www.bristol-aquarists.org.uk/goldfish/goldfish.htm
  6. https://archive.org/details/goldfishvarietie00inne
  7. https://www.about-goldfish.com/goldfish-types.html
  8. https://a-z-animals.com/blog/every-type-of-goldfish-color-size-and-care-tips/
  9. https://toledogoldfish.com/blogs/news/a-complete-guide-to-popular-types-of-goldfish
  10. https://www.thesprucepets.com/12-types-of-goldfish-5525618
  11. https://tropicflow.com/blogs/goldfish-blogs/guide-to-identifying-different-types-of-goldfish
  12. https://pmc.ncbi.nlm.nih.gov/articles/PMC6680352/
  13. https://registerforum.org/20522/opinion/a-moral-dilemma-of-breeding-and-meteor-goldfish/
  14. https://pondinformer.com/goldfish-types/
  15. https://nextdaykoi.com/goldfish-facts/comprehensive-guide-to-goldfish-diseases/
  16. https://blueridgekoi.com/koi-goldfish-resources/koi-goldfish-health/
  17. https://www.staradvertiser.com/2023/07/27/news/goldfish-breeders-keep-up-300-year-tradition/
  18. https://www.aquariumcoop.com/blogs/aquarium/care-guide-for-fancy-goldfish
  19. https://www.aqueon.com/resources/care-guides/goldfish
  20. https://www.liveaquaria.com/article/37/?aid=37
  21. https://toledogoldfish.com/pages/identifying-goldfish-diseases
  22. https://injaf.org/aquarium-fish/the-goldfish-section/fancy-goldfish-and-swimbladderbuoyancy-problems/
  23. https://completegoldfishcare.com/goldfish-diseases/aquarium-salt-treatment/
  24. https://lukesgoldies.com/blogs/news/salt-baths-and-use-of-salts-with-goldfish
  25. https://www.fbas.co.uk/o2inp.html
  26. https://kanimall.com/blog/meteor-goldfish-goldfish-breeds-part-8/
  27. https://www.fishlore.com/Articles/BreedingGoldfish.htm
  28. https://www.about-goldfish.com/goldfish-breeding.html
  29. https://www.eurekalert.org/news-releases/584042
  30. https://www.researchgate.net/publication/264133095_Gross_Abnormalities_in_Tilapia
  31. https://www.ufaw.org.uk/fish/tosakin-goldfish-deformed-caudal-fin
  32. https://www.ufaw.org.uk/fish/ranchu-goldfish-excessive-facial-tissue
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