The Bear Lake sculpin (''Cottus extensus'') occasionally referred to incorrectly as a " bullhead", is a species of freshwater sculpin

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to Bear Lake on the

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to its ...

Idaho Idaho ( ) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and W ...

border. It is one of only four sculpins native to Utah, and the only

extant Extant is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Extant taxon, a taxon which is not extinct, ...

lake-dwelling sculpin in Utah (see

Utah Lake sculpin The Utah Lake sculpin, ''Cottus echinatus'', was a species of freshwater sculpin endemic to Utah Lake, located in the north-central part of the U.S. state of Utah. The last collected specimen was taken in 1928, and the species is believed to ...

). Although the fish is only native to Bear Lake, it has been introduced and established in

Flaming Gorge Reservoir Flaming Gorge Reservoir is the largest reservoir in Wyoming, on the Green River, impounded behind the Flaming Gorge Dam. Construction on the dam began in 1958 and was completed in 1964. The reservoir stores of water when measured at an elev ...

. The Bear Lake sculpin is a

benthic The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from ancient Greek, βένθος (bénthos), meaning "t ...

fish and feeds on

invertebrates Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

. It is an important forage species for the native Bear Lake strain of

Bonneville cutthroat trout The Bonneville cutthroat trout (''Oncorhynchus clarkii utah'') is a subspecies of cutthroat trout native to tributaries of the Great Salt Lake and Sevier Lake. Most of the fish's current and historic range is in Utah, but they are also found i ...

and the nonnative

Lake trout The lake trout (''Salvelinus namaycush'') is a freshwater char living mainly in lakes in northern North America. Other names for it include mackinaw, namaycush, lake char (or charr), touladi, togue, and grey trout. In Lake Superior, it can als ...

in Bear lake. The species spawns between the months of April and May among rocks close to shore, and is listed as a ''Wildlife Species of Concern'' by the

Utah Division of Wildlife Resources The Utah Division of Wildlife Resources is part of the Utah Department of Natural Resources for the state of Utah in the United States. The mission of the Division of Wildlife Resources is to serve the people of Utah as trustee and guardian of ...

References

Bear Lake sculpin
''Utah Conservation Data Center''.

''Utah Division of Wildlife Resources''.

Cottus (fish)

Sculpin A sculpin is a type of fish that belongs to the superfamily Cottoidea in the order Scorpaeniformes.Kane, E. A. and T. E. Higham. (2012)Life in the flow lane: differences in pectoral fin morphology suggest transitions in station-holding demand ...

Fish described in 1963 Taxa named by Reeve Maclaren Bailey {{Scorpaeniformes-stub