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The lake sturgeon (Acipenser fulvescens), also known as the rock sturgeon, [7] is a North American temperate freshwater fish, one of about 25 species of sturgeon.Like other sturgeons, this species is a bottom feeder and has a partly cartilaginous skeleton, an overall streamlined shape, and skin bearing rows of bony plates on the sides and back.
It is sometimes called the sturgeon catfish. [2] This species occurs in the Amazon Basin and reaches a length of about 40.0 centimetres (15.7 in) TL . [ 3 ] Platystomatichthys is classified under the " Calophysus - Pimelodus clade".
They were extirpated from New York, Maryland and Pennsylvania, as well as from much of their peripheral range in the Great Lakes region, including Lake Huron and Lake Helen in Canada. [ 37 ] [ 35 ] In 1991, Pennsylvania implemented a reintroduction program utilizing hatchery -reared American paddlefish in an effort to establish self-sustaining ...
Fisheries staff with the U.S. Fish and Wildlife Service net a lake sturgeon for processing at Bamboo Bend on the Wolf River in Shiocton. The fish were measured, sexed and had a passive integrated ...
Areas such as Lake of the Woods and Rainy River saw sturgeon numbers grow to about 92,000 in 2014, nearly six times the estimate from the late 1980s, Klobuchar wrote last week in a letter to FWS ...
Lake sturgeon are one of the oldest fish species in North America and are native to at least two dozen states in the central, southern and eastern U.S. according to the USFWS. In Wisconsin they ...
Lake sturgeon: Acipenser fulvescens: Bottom of lakes and big rivers over sand, gravel, or rock bottom Endangered Amiidae (family) Bowfin: Amia calva: Sloughs, sluggish rivers to medium rivers with moderate flow Anguillidae (family) American eel: Anguilla rostrate: Large rivers w/ moderate flow Atherinidae (family) Brook silverside: Labidesthes ...
Exceptionally, both Huso species, the white sturgeon and the pallid sturgeon feed primarily on other fish as adults. They feed by extending their siphon-like mouths to suck food from the benthos . Having no teeth, they are unable to seize prey, though larger individuals and more predatory species can swallow very large prey items, including ...