Fish 450

Salmon ID

Fish 450

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. mykissErnest 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

M. Erickson

Coastal cutthroat trout

Sarah Ashworth

Anadromous coastal cutthroat trout Photo: Michael McHenry

Bonneville cutthroat trout, O. clarki utah

Photo: Todd Seamons

Yellowstone cutthroat trout, O. clarki bouvieri

Photo: Joseph Anderson

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

photo by Hans Berge

Bull trout, Salvelinus confluentusPacific drainages of North America

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

Brown trout, Newfoundland

Photo: Peter Westley

Brown trout,

Tierra del Fuego, Argentina

Brown trout smolt (“sea trout”)

Anadromous brown (= sea) trout, Salmo trutta