The name trout is commonly used for some species in three of the seven genera in the Family Salmonidae; ''Salmo'' (Atlantic species), ''Oncorhynchus'' (Pacific species) and ''Salvelinus'' (includes char). Also to some extent the Genus "Hucho".
This is a work in progress. If you have an interest to help out leave a comment below or PM Chris Scoones.
Genus Oncorhynchus:- Named but not yet considered spp. (Oncorhynchus sp.)
- Acaponeta (O. sp)
- Baluarte (O. sp)
- Conchos (O. sp)
- Mayo (O. sp)
- Piaxtla (O. sp)
- Presidio (O. sp)
- San Lorenzo (O. sp)
- Yaqui (O. sp)
- Apache trout (O. gilae apache)
- Cherry Salmon (O. masou or masu)
- Biwa Trout (O. masou rhodurus)
- Masu Trout or Yamame (O. masou masou)
- Red Spotted Masu Trout or Amago (O. masou ishikawae)
- Seema (O. masou)
- Cutthroat trout (O. clarki) ;
- Alvord Cutthroat (O. clarki alvordensis)
- Bonneville Cutthroat (O. clarki utah)
- Coastal Cutthroat (O. clarki clarki)
- Colorado River Cutthroat (O. clarki pleuriticus)
- Greenback Cutthroat (O. clarki stomias)
- Humboldt Cutthroat (O. clarki spp.)
- Lahontan Cutthroat (O. clarki henshawi)
- Lake Crescent Cutthroat (O. clarki f. crescentii)
- Paiute Cutthroat (O. clarki seleniris)
- Rio Grande Cutthroat (O. clarki virginalis)
- Snake River fine-spotted Cutthroat (O. clarki behnkei)
- Westslope Cutthroat (O. clarki lewisii)
- Whitehorse Basin Cutthroat (O. clarki spp.)
- Yellowfin Cutthroat (O. clarki macdonaldi) † (extinct)
- Yellowstone Cutthroat (O. clarki bouvieri)
- Gila trout (O. gilae gilae)
- Golden trout (O. aguabonita)
- Kern River Rainbow Trout (O. aguabonita gilberti)
- Little Kern Golden Trout (O. aguabonita whitei)
- Mexican Golden Trout (O. chrysogaster)
- Rainbow trout / Steelhead (Oncorhynchus mykiss)
- Coastal Rainbow Trout (O. mykiss irideus)
- Columbia River Basin Redband Trout (O. mykiss gairdneri)
- Eagle Lake Rainbow Trout (O. mykiss aqualarum)
- Golden Trout Creek Golden Trout (O. mykiss aguabonita)
- Kern River Rainbow Trout (O. mykiss gilberti)
- Little Kern River Golden Trout (O. mykiss whitei)
- McCloud River Redband Trout (O. mykiss stonei)
- Skull Creek Redband Trout (O. mykiss mewberroo)
Genus Salmo:- Adriatic trout (Salmo obtusirostris)
- Brown trout (sp. Salmo trutta) ;
- Ferox trout (Salmo ferox) (Lough Melvin, Ireland)
- Flathead trout (Salmo platycephalus)
- Gillaroo trout (Salmo stomachicus) (Lough Melvin, Ireland)
- Marble Trout (Salmo marmoratus)
- Ohrid trout (Salmo letnica)
- Sevan trout (Salmo ischchan)
- Sonaghen trout (Salmo nigrippinis) (Lough Melvin, Ireland)
- Trout of Algueman Lake, Morocco (Salmo pallaryi)
Genus Salmo / Salvelinus:- Tiger Trout (Salmo trutta / Salvelinus fontinalis)
Genus Salvelinus (Char):- Arctic char (Salvelinus alpinus)
- Aurora trout (Salvelinus fontinalis timagamiensis)
- Brook trout (Salvelinus fontinalis)
- Bull trout (Salvelinus confluentus)
- Dolly Varden (Salvelinus malma)
- Lake trout (Salvelinus namaycush)
- Silver trout (Salvelinus fontinalis agassizi † (extinct))
- Sunapee Trout (Salvelinus aureolus oquassa)
- Blueback Trout (Salvelinus aureolus oquassa)
Genus Hucho- Taimen (Hucho taimen)
- Huchen (Hucho hucho)
Trout Groups:
Western Native Trout Species:- Apache Trout
- Bonneville Cutthroat
- Bull Trout
- California Golden Trout
- Coastal Cutthroat
- Colorado River Cutthroat
- Gila Trout
- Greenback Cutthroat
- Lahontan Cutthroat
- Little Kern Golden Trout
- Paiute Cutthroat
- Redband Trout
- Rio Grande Cutthroat
- Westslope Cutthroat
- Yellowstone Cutthroat
Native Mexican Trout] (Genus Oncorhynchus spp.)- Yaqui and Guzman Trout Species
- Rio Tomochic Trout
- Rio Mayo Trout
- Mexican Golden Trout
- San Lorenzo Trout
- Piaxla Trout
- Presidio Trout
- Baluarte Trout
- Acaponeta Trout
- Conchos Trout
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Genus Oncorhynchus:

Apache Trout - Photo by gigharborflyfisher

Masu Trout

Red Spotted Masu Trout

Alvord Cutthroat Trout - Photo by gigharborflyfisher

Bonneville Cutthroat Trout - Photo by Hos74

Coastal Cutthroat Trout - Photo by Ibn

Colorado Cutthroat Trout - Photo by gigharborflyfisher

Greenback Cutthroat Trout - Photo by gigharborflyfisher

Humboldt Cutthroat Trout - Photo by gigharborflyfisher

Lahontan Cutthroat Trout - Photo by gigharborflyfisher

Paiute Cutthroat Trout - Photo by gigharborflyfisher

Rio Grande Cutthroat - Photo by gigharborflyfisher

Snake River Fine-Spotted Cutthroat Trout - Photo by mike doughty

Westslope Cutthroat Trout - Photo by mike doughty

Westslope Cutthroat Trout - Photo by jackchinook

Whitehorse Basin Cutthroat Trout - Photo by gigharborflyfisher

Yellowstone Cutthroat Trout

Gila Trout - Photo by gigharborflyfisher

Golden Trout - Photo by gigharborflyfisher

Golden Trout - Photo by jackchinook

Rainbow Trout - Photo by Ibn

Rainbow Trout - Photo by kamishak steve
Genus Salmo:

Brown Trout - Photo by Chris Scoones
Genus Salmo/Salvelinus Cross:

Tiger Trout - Photo by Salvelinus
Genus Salvelinus (Char):

Brook Trout - Photo by creekassualt

Brook Trout - Photo by jackchinook

Bull Trout - Photo by unknown

Dolly Varden - Photo by Salvelinus
Genus Hucho:
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