Oncorhynchus is a genus of fish in the family Salmonidae; it contains thePacific salmon and Pacific trout. The name of the genus is derived from the Greek onkos ("hook") and rynchos ("nose"), in reference to the hooked jaws of males in the mating season the "kype".
Salmon and trout with native ranges in waters draining to the Pacific Ocean are members of the genus. Their range extends from Beringia southwards, roughly to Japan in the west and Mexico to the east. In North America, some subspecies of O. clarki are native in the Rocky Mountains and Great Basin, while others are native to the Rio Grande and western tributaries of the Mississippi River Basin which drain to the Gulf of Mexico, rather than to the Pacific. Several species of Oncorhynchus have been introduced into non-native waters around the globe establishing self-sustaining wild populations.
The six Pacific salmons of Oncorhynchus are anadromous (migratory) and semelparous (die after spawning). Anadromous forms of Oncorhynchus mykiss known as steelhead are iteroparus. The Coastal cutthroat trout form of Oncorhynchus clarkiis considered semi-anadromous as it spends short periods of time in marine environments.
Salmon and trout with native ranges in waters draining to the Pacific Ocean are members of the genus. Their range extends from Beringia southwards, roughly to Japan in the west and Mexico to the east. In North America, some subspecies of O. clarki are native in the Rocky Mountains and Great Basin, while others are native to the Rio Grande and western tributaries of the Mississippi River Basin which drain to the Gulf of Mexico, rather than to the Pacific. Several species of Oncorhynchus have been introduced into non-native waters around the globe establishing self-sustaining wild populations.
The six Pacific salmons of Oncorhynchus are anadromous (migratory) and semelparous (die after spawning). Anadromous forms of Oncorhynchus mykiss known as steelhead are iteroparus. The Coastal cutthroat trout form of Oncorhynchus clarkiis considered semi-anadromous as it spends short periods of time in marine environments.
Oncorhynchus-mykiss-fry it's amazing something this small can become so big and beautiful, enjoy. pic.twitter.com/xSIxAJ2BsX
— Steelheadmanifesto (@Steelhead4ever) August 7, 2014
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