The body is long, the side is flat, and the back is curved, not very bulging. Big mouth. At the end position, it inclines slightly upwards, the mandible protrudes slightly, the canine teeth are well developed, and the canine teeth are only irregularly arranged at the front ends of the upper and lower jaws. Bujaw teeth are usually two teeth that exist at the same time, in a line. There are small dark round spots on the head and more round spots on the side. The individual is not big, generally 100 ~ 300mm long, and the yield is not high. The body is brown or grayish yellow, and the abdomen is yellowish white. There are black spots of different sizes on the top of the head, back and lateral lines, but there are no stripes. There are black spots on each fin spine, and the pectoral fin and ventral fin are light brown.