The Rocky Mountain cutthroat trout, formerly lumped in with the cutthroat trout as one species with multiple subspecies, is a fish species of the family Salmonidae native to cold-water tributaries of

Oncorhynchus is a genus of ray-finned fish in the subfamily Salmoninae of the family Salmonidae, native to coldwater tributaries of the North Pacific basin. The genus contains sixteen extant species,