Shuangyashan catfish

Catfish is a nocturnal animal, which hides quietly in the pit at the bottom of the river or under the roots during the day. Large species that eat a lot, such as the Danube catfish, will attack small waterfowl or mice. Catfish is a ferocious fish at the bottom. Afraid of light, I like to live in stone crevices, deep pits, earth caves or caves at the bottom of tree roots and slow-flowing waters near rivers. In the still water of reservoirs, ponds, lakes and weirs, most of them lie under the dark bottom or patches of water hyacinth, water peanuts and water hyacinth. In spring, activities and foraging begin. After winter, it doesn't eat, but lurks in deep water or caves for the winter. If there is nothing to invade, it generally doesn't swim. Catfish have small eyes, weak vision, lie in the daytime and go out at night. They hunt by smell and two pairs of tentacles. They are very gluttonous. The hotter the weather, the greater their appetite, and they are active on cloudy days and at night. Catfish mature sexually early, usually at the age of one. The spawning period is from April to June along the Yangtze River, and the farther south, the earlier and the farther north, the later. When laying eggs, they chase in groups. Similar to Darwin's frog, male catfish also put the eggs laid by female catfish in their mouths to hatch young catfish. The difference is that male catfish can't eat during this period. Young fish feed on zooplankton and molluscs, among which aquatic insects's larvae and shrimps are its delicacies. Catfish are gluttonous and easy to grow. About 500 grams of young fish will swallow a lot of crucian carp and carp, and the largest individual can reach more than 40 kilograms. Catfish is suitable for living in water with water temperature of 20-25℃. Catfish generally have no scales, a slimy surface, a flat head and a big mouth, and four beards on the upper and lower jaws, so it is necessary to be able to distinguish the taste. There are three catfish, namely, big mouth, big head and big belly. There are two colors: one is cyan, the other is tooth yellow, and the catfish with tooth yellow has spots on its body. Catfish eggs are poisonous. Eating them by mistake will lead to vomiting, abdominal pain, diarrhea, dyspnea, and even paralysis in severe cases.
Reprinted with attribution： https://cnlocality.com/(Chinese Specialty Products)