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The name trout is commonly used for some species in three of the seven genera in the subfamily Salmoninae: Salmo, Atlantic species; Oncorhynchus, Pacific species; and Salvelinus, which includes fish also sometimes called char or charr. Fish referred to as trout include:
Genus Salmo

Salmo: Marble trout, S. marmoratus
Adriatic trout, Salmo obtusirostris
S. o. oxyrhynchus
S. o. salonitana
S. o. krkensis
S. o. zetensis
Salmo trutta
Brown trout, S. t. morpha fario and S. t. morpha lacustris
Sea trout, S. t. morpha trutta
Flathead trout, Salmo platycephalus
Marble trout, Soca River trout or Soča trout – Salmo marmoratus
Ohrid trout, Salmo letnica, S. balcanicus (exctinct), S. lumi, and S. aphelios
Sevan trout, Salmo ischchan
Winter bakhtak, S. i. ischchan
Summer bakhtak, S. i. aestivalis
Gegharkuni, S. i. gegarkuni
Bojak, S. i. danilewskii
Genus Oncorhynchus

Oncorhynchus: Rainbow trout, O. mykiss
Biwa trout, Oncorhynchus masou rhodurus
Cutthroat trout, Oncorhynchus clarki
Coastal cutthroat trout, O. c. clarki
Crescenti trout, O. c. crescenti
Alvord cutthroat trout O. c. alvordensis (extinct)
Bonneville cutthroat trout O. c. utah
Humboldt cutthroat trout O. c. spp.
Lahontan cutthroat trout O. c. henshawi
Whitehorse Basin cutthroat trout, O. c. spp.
Paiute cutthroat trout O. c. seleniris
Snake River fine-spotted cutthroat trout, O. c. behnkei
Westslope cutthroat trout O. c. lewisi
Yellowfin cutthroat trout O. c. macdonaldi (extinct)
Yellowstone cutthroat trout O. c. bouvieri
Colorado River cutthroat trout O. c. pleuriticus
Greenback cutthroat trout O. c. stomias
Rio Grande cutthroat trout O. c. virginalis
Oncorhynchus gilae
Gila trout, O. g. gilae
Apache trout, O. g. apache
Rainbow trout, Oncorhynchus mykiss
Kamchatkan rainbow trout, Oncorhynchus mykiss mykiss
Columbia River redband trout, Oncorhynchus mykiss gairdnerii
Coastal rainbow trout/Steelhead trout, Oncorhynchus mykiss irideus
Beardslee trout, Oncorhynchus mykiss irideus var. beardsleei
Great Basin redband trout, Oncorhynchus mykiss newberrii
Golden trout, Oncorhynchus mykiss aguabonita
Kern River rainbow trout, Oncorhynchus mykiss aguabonita var. gilberti
Sacramento golden trout, Oncorhynchus mykiss aguabonita var. stonei
Little Kern golden trout, Oncorhynchus mykiss aguabonita var. whitei
Kamloops rainbow trout, Oncorhynchus mykiss kamloops
Baja California rainbow trout, Nelson's trout, or San Pedro Martir trout, Oncorhynchus mykiss nelsoni
Eagle Lake trout, Oncorhynchus mykiss aquilarum
McCloud River redband, Oncorhynchus mykiss stonei
Sheepheaven Creek redband, Oncorhynchus mykiss spp.
Mexican Golden Trout, Oncorhynchus chrysogaster (Includes as many as eight other species or sub-species, not yet formally named)
Genus Salvelinus (Char)

Salvelinus: Brook trout, S. fontinalis
Brook trout, Salvelinus fontinalis
Aurora trout, S. f. timagamiensis
Bull trout, Salvelinus confluentus
Salvelinus malma
Dolly Varden trout, S. m. malma
Southern Dolly Varden, S. m. krascheninnikova
S. m. miyabei
Lake trout, Salvelinus namaycush
Silver trout, † Salvelinus agassizi (extinct)
Tiger trout, Salmo trutta X Salvelinus fontinalis
Splake, Salvelinus namaycush X Salvelinus fontinalis

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