Trout-perch Lakes in Minnesota & Wisconsin

Rough fish like Trout-perch are often associated with eutrophic, nutrient-loaded waters. Their presence — documented in 9 Minnesota and Wisconsin lakes — is often a signal of how the rest of the fishery is functioning. Trout-perch is narrowly distributed — only 0 Minnesota lakes and 9 Wisconsin lakes have a documented record. The constraint is usually habitat: cold water, specific depth profile, or river connection.

Rough-fish-dominant lakes are worth checking the grade on: a rough-fish-heavy fishery often reflects an underlying nutrient-loading problem in the watershed. Cross-reference the Trout-perch lake list below against the LakeGrade rubric: lakes with both an A or B grade and Trout-perch documented are the best places to start for recreational targeting.