The sea carp is a species of marine fish in the family Auchenipteridae, belonging to the genus Auchenipteridae. The body is elongated and laterally flattened, the dorsal edge is relatively straight, the ventral edge is slightly convex, the caudal peduncle is wide and short, and the caudal peduncle length is slightly smaller than the caudal peduncle height. The body length is 3.4-4.1 times the body height and 3.6-4 times the head length. Big head. Slightly elevated mouth; The lower jaw is more prominent, and the upper jaw extends backwards, close to the posterior edge of the eye. Having a throat plate. The body is covered with large and thin round scales, and there are no angular scales on the abdomen; Keep going straight on the side line, with a scale of 36-40 on the side line. The dorsal fin is located in the center of the body and the last fin is elongated into a filamentous shape; The starting point of the pelvic fin is below the starting point of the dorsal fin; The anterior fin of the anal fin is longer than the posterior fin.