The side of the body is flat, the front is high and the back is pointed, the tail handle is slender, the head is big and blunt, the forehead is prominent, and the head accounts for about one-third of the whole body, so it is commonly known as "big head treasure". The snout is wide and round, the mouth fissure is large and oblique, and the mandible is longer than the maxilla. Mucous cavity developed. The occipital spines protrude, and the front and back spines are saddle-shaped, and the central mental hole and the medial mental hole are arranged in a square shape. The edge of the front gill cover has fine serrations, and there is a notch between the spine and fin of the dorsal fin. The spine is thin and weak, and the tail fin is pointed. The body is covered with thin round scales, which are small and easy to fall off. Soft body, golden or taupe upper body, golden lower abdomen and white abdomen. There are two kinds of Meitong fish produced in China: Meitong fish with thorns and Meitong fish with black cheeks. The former is larger than the latter, generally 9 ~ 14 cm long and 5 ~ 50g heavy; Generally speaking, the body length of Meitong fish with black gills is 7.5-9.5 cm, and its weight is 9-20 g, and there is a dark plaque on its gill cavity, while Meitong fish with black gills has no black spots, which is a significant difference between them.