Shad is a type of fish belonging to the family Clupeidae, which also includes herring and sardines. These fish are known for their silvery bodies and are typically found in North America, particularly in rivers and coastal waters. Shad are anadromous, meaning they migrate from the ocean to freshwater rivers to spawn. The most well-known species is the American shad, which is popular for its mild flavor and is often sought after by anglers. Shad play an important role in the ecosystem, serving as a food source for various predators, including birds and larger fish.