Catch-per-unit-effort of black bullhead in Silver Lake (21.9 fish per net-night; fish/NN) was significantly higher than in Lake Minnewashta (P<0.0l; 10.4 fish/NN) and West Okoboji Lake (P<0.01: 5.6 fish/NN). Proportional size distribution (PSD) was similar among populations, but PSD...