Cast Gill

Rainbow Trout

Oncorhynchus mykiss · Salmonidae

About this fish

Spawning
January, February, November and December
Largest length
up to 120 cm (47 inches)
Lifespan
up to 7 years
Matures at
about 4 years old

Values come from a national database of the United States, not Wisconsin surveys: maximum length is the species' largest recorded anywhere, and spawning months are range-wide (Wisconsin timing, in a colder climate, can be later).

USGS FishTraits 14.3 (CC0). Credit: Frimpong and Angermeier, U.S. Geological Survey.

204 open records of this fish in Wisconsin were used here.

Lakes where it has been stocked

Stocking shows what was added to a lake, not what lives in it.

Showing 12 of 166 lakes

Lakes where it has been recorded

From open fish survey and museum records. A record shows the fish was found near the lake in that year, not that it is there now.

Showing 12 of 42 lakes