Oncorhynchus clarkii

Cutthroat trout
Coastal cutthroat trout, Oncorhynchus clarkii clarkii, the type subspecies
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Salmoniformes
Family:	Salmonidae
Genus:	Oncorhynchus
Species:	O. clarkii
Binomial name
Oncorhynchus clarkii (Richardson, 1836)
Subspecies
Subspecies Oncorhynchus clarkii clarkii O. c. alvordensis† O. c. behnkei O. c. bouvierii O. c. henshawi (threatened) O. c. humboldtensis O. c. lewisi O. c. macdonaldi† O. c. pleuriticus O. c. seleniris (threatened) O. c. stomias (threatened) O. c. utah O. c. virginalis
Synonyms
previous scientific names Salmo clarkii (Richardson, 1836) Fario clarkii (Richardson, 1836) Parasalmo clarkii (Richardson, 1836) Salmo clarkii clarkii (Richardson, 1836) Salmo clarki (Richardson, 1836) Salmo clarki clarki (Richardson, 1836) Fario stellatus (Girard, 1856) Salmo stellatus (Girard, 1856) Salar lewisi (Girard, 1856) Salmo lewisi (Girard, 1856) Salmo clarki lewisi (Girard, 1856) Salmo clarkii lewisi (Girard, 1856) Salmo brevicauda (Suckley, 1861) Salmo pleuriticus (Cope, 1872) Salmo purpuratus bouvieri (Jordan & Gilbert, 1883) Salmo clarkii alpestris (Dymond, 1931) Salmo mykiss (non Walbaum, 1792) Salmo purpuratus (non Pallas, 1814)

The cutthroat trout (Oncorhynchus clarkii) is a fish species of the family Salmonidae native to cold-water tributaries of the Pacific Ocean, Rocky Mountains, and Great Basin in North America. As a member of the genus Oncorhynchus, it is one of the Pacific trout, a group that includes the widely distributed rainbow trout. Cutthroat trout are popular gamefish, especially among anglers who enjoy fly fishing. The common name "cutthroat" refers to the distinctive red coloration on the underside of the lower jaw. The specific name clarkii was given to honor explorer William Clark, coleader of the Lewis and Clark Expedition.

Cutthroat trout usually inhabit and spawn in small to moderately large, clear, well-oxygenated, shallow rivers with gravel bottoms. They also reproduce in clear, cold, moderately deep lakes. They are native to the alluvial or freestone streams that are typical tributaries of the rivers of the Pacific basin, Great Basin and Rocky Mountains. Cutthroat trout spawn in the spring and may inadvertently but naturally hybridize with rainbow trout, producing fertile cutbows. Some populations of the coastal cutthroat trout (O. c. clarkii) are semi-anadromous.

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Wikipedia