 Many fish species occur in Puget Sound.The various salmonid species, including salmon, trout, and char are particularly well-known and studied.Salmonid species of Puget Sound include chinook salmon ("Oncorhynchus tshawytscha"), chum salmon ("O. keta"), coho salmon ("O. kisutch"), pink salmon ("O. gorbuscha"), sockeye salmon ("O. nerka"), sea-run coastal cutthroat trout ("O. clarki clarki"), steelhead ("O. mykiss irideus"), sea-run bull trout ("Salvelinus confluentus"), and Dolly Varden trout ("Salvelinus malma malma").