The United States is home to a diverse array of freshwater and marine fish, shellfish, and other aquatic species. More than 3,000 species of fish inhabit America’s streams, rivers, lakes, reservoirs, marshes, swamps, bays, estuaries, coral reefs, seagrass beds, shallow water banks, deep ocean canyons, and other watery habitats. The United States is also home to over 300 million people, all depending on the same water that fish depend upon. Healthy habitats are essential for sustainable fish populations. Unfortunately, in many places around the United States, fish and the habitats on which they depend are in decline. Almost 40 percent of the nation’s freshwater fish species are considered at risk or vulnerable to...