Trouts and Salmons/Fish of the Great Lakes by Wisconsin Sea Grant

Trouts and Salmons

Is it a trout or a salmon?

Radiating rows of black spots on tail fin; no reddish spots on body--rainbow trout
OR

Tail fin usually with no spots; reddish brown spots on sides of body except in large lake-run fish

All fish with dark head and body spots on light background (and 7-12 anal fin rays): rainbow trout, atlantic salmon, brown trout

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Sources: "Fishes of Isle Royale," by K.F. Lagler and C. R. Goldman, Isle Royale Natural History Association, 1982.
Fishes of Wisconsin, by George C. Becker, University of Wisconsin Press, 1983.
Freshwater Fishes of Canada, by W.B. Scott and E.J. Crossman, Fisheries Research Board of Canada, 1973.

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