Fish 450 Fish 450

Fish 450 Fish 450

Salmon ID Salmon Identification Part 3 Pacific trout: formerly in the genus Salmo, re-classified as Oncorhynchus as of 1989*

Rainbow/steelhead trout: O. mykiss Cutthroat trout: O. clarki (multiple sub-species) Other non-anadromous trout species and subspecies

* Smith, G. R., and R. F. Stearley. 1989. The classification and scientific names of rainbow and cutthroat trouts. Fisheries 14(1):4-10. Rainbow/steelhead trout fry, Oncorhynchus mykiss (formerly Salmo gairdneri) Rainbow trout parr: Note spots on dorsal and adipose fins, body, and tail, and short jaw (photo: Morgan Bond)

Rainbow trout: photo by Hans Berge Little Lost River, Idaho Hans Berge Rainbow trout can grow large, feeding on salmon flesh, eggs, fry and smolts

Steelhead, anadromous O. mykiss Ernest Keeley Sol Duc steelhead: Female and Male

Photos by George Pess

Rainbow trout

Coastal cutthroat trout, Oncorhynchus clarki clarki Photo: Richard Bell Coastal cutthroat trout

M. Erickson Coastal cutthroat trout

M. Erickson Sarah Ashworth Anadromous coastal cutthroat trout Photo: Michael McHenry Photo: Todd Seamons

Bonneville cutthroat trout, O. clarki utah Photo: Joseph Anderson

Yellowstone cutthroat trout, O. clarki bouvieri Golden trout, O. mykiss aguabonita Golden trout: photo by Chris Sergeant Apache trout, Oncorhynchus gilae apache Asian Pacific salmon: genus Oncorhynchus

Masu or cherry salmon: O. masou Amago: O. rhodurus

These two are sometimes considered to be a single species. Masu salmon, Oncorhynchus masou Asian coast of the Pacific Ocean only Masu salmon, Oncorhynchus masou Mature male O. masou parr Char(r): genus Salvelinus

Dolly Varden: S. malma Arctic charr: S. alpinus Bull trout: S. confluentus Brook trout: S. fontinalis Lake trout: S. namaycush Whitespotted charr: S. leucomaenis Dolly Varden charr, Salvelinus malma Asian and North American drainages of the Pacific Ocean Dolly Varden, Pedro Bay ponds, Iliamna Lake, Alaska Dolly Varden, Iliamna River, Alaska Anadromous Dolly Varden, Chignik, Alaska Arctic charr Salvelinus alpinus Circumpolar – Atlantic, Pacific and Arctic oceans Arctic charr: tail deeply forked, thin caudal peduncle, large spots (?)

Dolly Varden – tail less deeply forked, thicker caudal peduncle, small spots. Ugashik Lake Photo: Miranda Plumb, Univ. of Alaska Arctic charr: photo by Jon Moore Arctic charr, Salvelinus alpinus Lake Tinnsjo, Norway

I. Fleming Jeff Hutchings, Hazen Lake, Ellesmere Island, 82.5 N latitude Bull trout, Salvelinus confluentus Pacific drainages of North America

photo by Hans Berge Photo: Ryan Simmons photo by Hans Berge Mature British Columbia bull trout: photo by Ernest Keeley Bull trout, Montana Photo: Thomas McMahon Lake trout (Salvelinus namaycush) North America

courtesy Steve Geving, Minnesota DNR

Brook (speckled) trout (charr), Salvelinus fontinalis Eastern North America Brook trout: photo by Hans Berge

Sea-run brook trout (“salter”) Whitespotted char, Salvelinus leucomaenis Asian drainages of the Pacific Ocean Atlantic salmon and brown trout: genus Salmo

Atlantic salmon: S. salar Brown trout: S. trutta Atlantic salmon, Salmo salar European and North American drainages of the Atlantic Ocean Atlantic salmon, Salmo salar Atlantic salmon, Salmo salar Juvenile coho salmon (background) and Atlantic salmon (foreground)

Roger Tabor Brown trout, Salmo trutta European drainages of the Atlantic Ocean Brown trout, River Lee, Ireland Photo: Peter Westley

Brown trout, Newfoundland Brown trout, Tierra del Fuego, Argentina Brown trout smolt (“sea trout”) Anadromous brown (= sea) trout, Salmo trutta