Trouts and Salmons
Identifying the Brown Trout
To identify the brown trout, check for orange/red coloration on the adipose fin and a lack of pink/rose stripe along the side of the body. In the Great Lakes, the fish's overall coloring may be more silvery than brown.
Look for:
-more than 120 scales in lateral line
-usually many spots on gill cover
-rusty-red spots often on margin of adipose fin and sides of body
-no radiating rows of black spots on tail fin, which is usually entirely
without spots
-reddish brown spots on sides of body except in large lake-run individuals
-Pelvic and anal fins usually without white edging
-Usually 10 branchiostegal rays
Complete brown trout profile | Main trouts and salmons page
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.
copyright 2001 University of Wisconsin Sea Grant Institute
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