Freshwater fish (yellow perch, bluegill sunfish, pumpkinseed sunfish, largemouth bass) in a net

Freshwater fish (yellow perch, bluegill sunfish, pumpkinseed sunfish, largemouth bass) in a net. Healthy fish populations require suitable habitat.  We have studied the habitat requirements of many fish species to provide information to managers how they can best manage in-stream flow and habitat to favor production of the fish(es) of interest.