Archosargus probatocephalus, the sheepshead, is a marine fish that grows to 30 in (760 mm), but commonly reaches 10 to 20 in. It is deep and compressed in body shape, with five or six dark bars on the side of the body over a gray background. It has sharp dorsal spines. Its diet consists of oysters, clams, and other bivalves, and barnacles, fiddler crabs, and other crustaceans. It has a hard mouth, with several rows of stubby teeth, which help crush the shells of prey.