The American Shad (Alosa sapidissima) is a migratory fish found along the Atlantic coast of North America. Known for its significant historical and ecological importance, this fish can ... The American Shad (Alosa sapidissima) is a migratory fish found along the Atlantic coast of North America. Known for its significant historical and ecological importance, this fish can reach about 30 inches in length. American Shad are anadromous, meaning they live in the ocean but return to freshwater rivers to spawn. They are valued for their fight when caught and their delicate, flavorful meat. Conservation efforts focus on improving river habitats to support their spawning journeys.Click here to read more about American Shad.