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Tahoe sucker
The Tahoe sucker (Catostomus tahoensis) is a freshwater cypriniform fish inhabiting the Great Basin region of the Western United States.
The Tahoe sucker is a large, long fish with a tapering head. It can grow up to 24 inches (610 mm) in larger lakes, but rarely exceeds 6 inches (152.4 mm) in streams. Its rather large suckermouth is located on the bottom of the head, commonly referred to as a subterminal mouth. Where its lower lips are thick and fleshy, its upper lips contain 2–4 rows of papillae. The caudal fin is moderately forked. There are 83 to 87 scales in the lateral line. They are very dark above, lighter below, with dusky fins. Breeding males display a bright red lateral line and breeding tubercles on the anal fin and tail.
These fish are native to the Lahontan Basin of southeastern Oregon, Nevada, and northeastern California, and southwestern Idaho, as seen in the image below.
The Tahoe sucker is one of the most common fishes found in the Lahontan Basin, making up a majority of the native fish populations. It has also been introduced into the upper Sacramento River system. The total adult population is believed to number over 100,000, and it is considered to be common or abundant in its various habitats.
The Tahoe sucker is considered a stream generalist, however it reaches its greatest size and numbers in lakes and reservoirs. They are predominantly found in cool streams, but are capable of withstanding temperatures of around 25 °C (77 °F).
In Lakes, Suckers may grow to exceed 60 centimetres (24 in) in length, compared to 15 centimetres (5.9 in) in streams. Suckers are able to grow to such larger sizes in lakes by feeding along the bottom of the lake, sometimes as deep as 300 metres (980 ft). Adults occupy moderate to deeper depths. Young are found in shallow waters or tributary streams, where water travels slower.
Source:
The Trophic position of Tahoe suckers within Cascade Lake indicates a primarily small organism based-diet. Tahoe suckers are omnivorous, and feed on a mix of algae, detritus, and various forms of invertebrates. Suckers typically feed at night time, in order to avoid predation from larger fish such as Lake Trout. While Suckers are still juvenile they feed on Cladocera's and small organisms found in or around algae.
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Tahoe sucker
The Tahoe sucker (Catostomus tahoensis) is a freshwater cypriniform fish inhabiting the Great Basin region of the Western United States.
The Tahoe sucker is a large, long fish with a tapering head. It can grow up to 24 inches (610 mm) in larger lakes, but rarely exceeds 6 inches (152.4 mm) in streams. Its rather large suckermouth is located on the bottom of the head, commonly referred to as a subterminal mouth. Where its lower lips are thick and fleshy, its upper lips contain 2–4 rows of papillae. The caudal fin is moderately forked. There are 83 to 87 scales in the lateral line. They are very dark above, lighter below, with dusky fins. Breeding males display a bright red lateral line and breeding tubercles on the anal fin and tail.
These fish are native to the Lahontan Basin of southeastern Oregon, Nevada, and northeastern California, and southwestern Idaho, as seen in the image below.
The Tahoe sucker is one of the most common fishes found in the Lahontan Basin, making up a majority of the native fish populations. It has also been introduced into the upper Sacramento River system. The total adult population is believed to number over 100,000, and it is considered to be common or abundant in its various habitats.
The Tahoe sucker is considered a stream generalist, however it reaches its greatest size and numbers in lakes and reservoirs. They are predominantly found in cool streams, but are capable of withstanding temperatures of around 25 °C (77 °F).
In Lakes, Suckers may grow to exceed 60 centimetres (24 in) in length, compared to 15 centimetres (5.9 in) in streams. Suckers are able to grow to such larger sizes in lakes by feeding along the bottom of the lake, sometimes as deep as 300 metres (980 ft). Adults occupy moderate to deeper depths. Young are found in shallow waters or tributary streams, where water travels slower.
Source:
The Trophic position of Tahoe suckers within Cascade Lake indicates a primarily small organism based-diet. Tahoe suckers are omnivorous, and feed on a mix of algae, detritus, and various forms of invertebrates. Suckers typically feed at night time, in order to avoid predation from larger fish such as Lake Trout. While Suckers are still juvenile they feed on Cladocera's and small organisms found in or around algae.
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