The wreckfish, named for the tendency of juveniles to associate with floating ocean wreckage (3), is a large bluish-grey fish, with a paler, silvery underside and blackish-brown fins (2). The rough, scaly body is flattened sideways and the caudal, or tail, fin is gently rounded and edged with white. The wreckfish has a large mouth, with the lower jaw projecting considerably beyond the upper jaw (3), and a bony ridge protrudes across the upper part of the gill cover (2). Juvenile wreckfish bear black blotches on the head and body (2).