What is a river fish?

Catfish generally refers to barracuda, which is a kind of carp.

Catfish's body is spindle-shaped, its surface is smooth and phosphorus-free, its eyes are small, its fat fins are thick, its tail fins are deeply forked, its body color is pink, its abdomen is white and its fins are gray-black.

Catfish often live in river bend waters with slow water flow, deep water depth and many stones. During the day, they often lurk underwater or in crevices, and go out to look for food at night. When foraging, it also moves in the middle and lower layers of water; Overwintering in the gravel crevices in the deep water of the main stream in winter. It mainly feeds on aquatic insects and its larvae, crustaceans, small mollusks and small fish. The Liaohe River, Huaihe River, Yangtze River, Minjiang River and Pearl River are distributed in the east of China and the west of Korea, with the Yangtze River as the main water system. The best time to catch catfish in the Yangtze River is usually in the flood season of the Yangtze River, that is, from May to September every year, which is the golden season for catfish fishing. Especially in the fast-flowing and swirling water, or in the deep water of rocks or underwater rocks. Especially on rainy days, the food is strong. ?

Catfish like to gather together and are afraid of light. It belongs to warm-water fish and cannot tolerate hypoxia. The optimum growth temperature is 13-30℃, and when the dissolved oxygen in water is lower than 2.5mg/L, the phenomenon of floating head will appear.

Catfish is one of the three treasures of aquatic products in the Yangtze River. It is difficult to find it in lakes, streams or ponds, and the weight is generally around 1.5-2.5 kg, and a few individuals can reach 10 kg. In spring and autumn, the Yangtze River estuary is the best tasting season with fresh fat.

The body color characteristics of wild Yangtze catfish are blue-gray back, dark gray fins and white belly, commonly known as "amber back and white belly", and its taste is completely different from the pink and white Guangdong fat fish on the market at present.

Every year, with the call of "Spring in March, the river is fresh", puffer fish, swordfish and shad leap onto the table. Although these three flavors are extremely fresh, the former is poisonous, while the latter two have many small thorns and high prices. Therefore, it is often daunting and hateful. However, it is the "fourth freshness of the Yangtze River"-the squid that combines the strengths of many families and benefits the people. It is really worth a try.

Catfish, also written in the south, has different names in different parts of China, such as "Catfish Mouse" in Shanghai, "Jiangtuan" in Sichuan and "Western Regions" in Guizhou. The head is tapered, the tail is long, the mouth is small and the stomach is big. It is said to be a carnivorous fish. In the past, carp was an important economic fish in the upper reaches and tributaries of the Yangtze River, with high yield, while Shishou, Leshan, Beibei, Nanchong and Feng 'an in Sichuan were famous producing areas.

Catfish is different from Qingjiang fish. Qingjiang fish refers to fish produced in Qingjiang reservoir area of Hubei Province, mainly including red catfish, white sturgeon, Ding Gui, Jiangtuan, Qingjiang black catfish, etc. Catfish is one of them. Catfish is not only a Qingjiang fish, but also a fat king fish, which is distributed in many water systems such as the Yangtze River, Huaihe River, Liaohe River, Pearl River and Minjiang River. ?

The shad, swordfish and silver carp are called "Three Freshness of the Yangtze River". Specification of wild Yangtze catfish: 500g ~ 2500g each.