Marlin is a common name for the sailfish. The maxilla of this family is protruding forward like the head of a gun, its lateral beak is blunt and round, its body is covered with small scales, and its skin is thick as leather. It is widely distributed in the upper waters within 200 meters of tropical and subtropical zones. Marlin is a common name for large marine fishes of the order Perciformes, sailfish family. It is widely distributed in the family fishes. The body is elongated, the side is flat, and the body is strong. The head height is gradually thinner and the tail handle is strong.
The skin is thick as leather. The maxilla protrudes forward like a spearhead, and its lateral beak is blunt and round. There are 2 dorsal fins. The first dorsal fin goes straight from the rear head, and the tail is like a sail, which is close to the small second dorsal fin. There are 2 gluteal fins, large caudal fin and deep bifurcated caudal fin. The pectoral fin is sickle shaped, and there are two ridges on each side of the caudal stalk.