They prefer very warm, quiet, shallow waters under the cover of weed beds and submerged brush.
A fish is a cold-blooded animal that lives and breathes underwater. Fish typically have scales, gills, fins, and a streamlined body.

At a Glance
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They prefer very warm, quiet, shallow waters under the cover of weed beds and submerged brush.
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This brightly colored fish is Wisconsin's only native stream trout.
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Steelhead and rainbow trout are really the same species of fish.
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The bullhead is an interesting, smooth-skinned fish.
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Wisconsin has two kinds of catfish, the channel catfish and the flathead catfish.