Chinese snakehead?
Chinese name: Chinese snakehead?
Scientific name: Bostrychus sinensis (Lacepede, 1802)? English name: Chinese?black?sleeper? Common name: Wu fish, Wen fish, bamboo shootshell fish, earth fish,? Commonly known as crab tiger in southern Fujian Species: Freshwater products?
Species: Freshwater products -? Fish? Classification: Perciformes? Pangasiaceae? snakeheads? Introduction: Chinese snakeheads have an extended body, the anterior part is cylindrical, the posterior part is laterally compressed, and the head is quite wide and slightly flat. The head is quite wide and slightly flat. The mouth is wide and anterior, and the anterior nostrils have elongated nasal tubes that hang over the upper lip. Upper and lower jaws equal in length, both jaw teeth small and sharp. Body covered with rounded scales, without lateral lines. Dorsal fins 2, anal fin and second dorsal fin homomorphic, smaller. Right and left ventral fins close to each other, not fused into a sucker. Caudal fin rounded. The body is gray-brown, with a large eye-shaped black spot with a white edge above the base of the caudal fin. The Chinese snakehead inhabits shallow seas, inland bays and estuaries, and also enters freshwater, overwintering in the mud and sandy bottoms in winter. Its nature is fierce, feeding on small fish, shrimp and crab, aquatic insects and shellfish. Distributed in the south of China's Yellow Sea, the East China Sea, the South China Sea and the Japanese waters. It has strong vitality, wide adaptability, strong disease resistance, fast growth, and is an excellent species for artificial culture. Chinese snakeheads are rich in nutrients, meat flavor, and has the effect of accelerating the healing of wounds, in addition, the fish's most important feature is to leave the water in the shade under humid conditions can be maintained for a week without death, is a suitable for the live transport of long-distance marketing and export of one of the good varieties of seafood.
The Chinese snakehead is a warm-water shallow salty freshwater fish. Mainly distributed in estuaries, harbors, inhabiting mud holes or caves. Small size, carnivorous, preferring small mixed crabs, shrimp, fish, shellfish and so on. Wide salinity, optimal salinity 5 ‰ -15 ‰, 21 ‰ or more slow growth. The optimal water temperature is 23-26 ℃, when the water temperature is lower than 15 ℃, generally in the cave, do not go out to feed, the lethal water temperature of 10 ℃ or less. pH value of 7.0-8.2 is appropriate, the requirement of dissolved oxygen in 4.0 mg / liter or more.