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The following list of known freshwater fish species, subspecies, and hybrids occurring in the U.S. state of Idaho is taken from Wydoski and Whitney (2003). Some scientific names have been updated or corrected.
Bear River cutthroat trout O. v. ssp. Native to the Bear River watershed at the Idaho, Utah, and Wyoming border. The Bear River cutthroat were lumped with the Bonneville cutthroat as a single subspecies until recently. [13] [5] Genetic studies show they are actually more closely related to the Yellowstone cutthroat than to the Bonneville cutthroat.
The Columbia River redband trout is found in the Columbia River and its tributaries in Montana, Oregon, Washington and Idaho. Anadromous populations of O. m. gairdneri are known as redband steelhead. The McCloud River redband trout is found in small tributaries of the McCloud River and Pit River which are tributaries of California's Sacramento ...
The Dolly Varden trout (Salvelinus malma) is a species of salmonid ray-finned fish native to cold-water tributaries of the Pacific Ocean in Asia and North America.Despite the name "trout" (which typically refers to freshwater species from the genera Salmo and Oncorhynchus), it belongs to the genus Salvelinus (chars), which includes 51 recognized species, the most prominent being the brook ...
Historically, cutthroat trout was considered one species (Oncorhynchus clarkii).[2] [9] However, recent genetic, taxonomic, and geologic [10] evidence has determined that cutthroat trout should be divided into four species, with each (except for the coastal cutthroat) having multiple subspecies corresponding to the evolutionary lineages [11] found within major river basins.
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The species is also found in Idaho, Utah and Nevada. [3] It is believed that it got into Yellowstone River (which drains into Atlantic) from Snake River (which drains into Pacific) drainages through a small creek known as Parting of the Waters. It is one of the few aquatic species that has crossed a continental divide. [4] [5]
The Columbia River redband trout, [1] the inland redband trout [2] or the interior redband trout [1] (Oncorhynchus mykiss gairdneri) is one of three redband trout subspecies of the rainbow trout in the family Salmonidae. [3] It is native in the Columbia River and its tributaries in Idaho, Oregon, Washington and Montana.