Non-native fish have invaded and altered freshwater ecosystems around the world. Many of these species are popular gamefish that have been purposefully introduced beyond their native range to enhance local fishing opportunities. However, the...
Walleye (Sander vitreus; Figure 1) are one of the most sought-after fish among recreational anglers in the Upper Midwest. Prized for their mild flavor and flaky texture, they are a staple of Friday night...
Largemouth bass (Micropterus salmoides; Figure 1) are a highly prized freshwater gamefish in the sunfish family, Centrarchidae. They are native to east-central North America but have been introduced worldwide due to their popularity with...
Largemouth bass (Micropterus salmoides; Figure 1) and smallmouth bass (Micropterus dolomieu; Figure 2) are two of the most popular species of freshwater fish in North America. Both species are voracious predators and are highly...
In many rivers throughout the world, dams have greatly altered the aquatic ecosystem. These structures block migratory routes for anadromous species that live in saltwater and migrate into freshwater to spawn, preventing them from...
In many coldwater streams in North America, nonnative trout are replacing native trout populations through hybridization, competition, and predation. Brook trout (Salvelinus fontinalis; Figure 1) are a species native to eastern North America. Throughout...
Submerged aquatic vegetation (SAV) are underwater plants that grow in shallow water and do not emerge above the surface. These areas are important nurseries for juvenile fish and provide refuge for smaller species of...
Due to degraded habitat and poor water quality throughout North America, stream restoration projects are becoming increasingly widespread. These projects frequently focus on restoring riparian and stream habitat, stabilizing streambanks to reduce erosion, and...
Ever see a fish climb a waterfall? In Hawaii, it’s the course of business for most native freshwater fishes. I know when I think of fish habitat in Hawaii, I visualize snorkeling in crystal...
