Snakehead, an animal of the genus Siniperca, is a common edible fish in China. Black snakehead is round in length, equal in head and tail, with fine black scales, mottled patterns, tongue, teeth and belly, spines on the back and abdomen continuing to the tail, and the tail is not bifurcated. The front part of the body is cylindrical, the rear part is flat, and it is fierce in nature and has a large appetite. It lives in waters with overgrown water plants or muddy sediments.

The front part of snakehead is cylindrical and the back part is flat. The head is long, slightly flat at the front and slightly raised at the back. The kiss is short, round and blunt, with a large mouth, an end position, a slightly oblique mouth crack, and a slightly protruding jaw. The teeth are small and banded in the upper and lower jaws, and the teeth on both sides of the mandible are firm. Small eyes, upper position, in the first half of the head, quite close to the snout.

life habit

Ophiocephalus argus is a freshwater benthic fish, which usually inhabits the waters with overgrown aquatic plants or muddy sediments, and is distributed in rivers, lakes, reservoirs, ponds, paddy fields and other waters. It has strong adaptability to environmental factors in water, especially to dissolved oxygen, water temperature and water quality.

16 to 30℃ is the optimum temperature for the growth, development and reproduction of snakehead. When the water temperature returns to above 8℃ in spring, it usually moves in the middle and upper water bodies; In summer, snakehead mostly moves in the upper water body; When the temperature is lower than 6℃ in autumn, the snakehead swims slowly and often lurks in the depths of the water layer. When the water temperature is close to 0℃ in winter, it will be buried in silt for the winter.