There are a lot of fish in the world, we are familiar with crucian carp, carp, grass carp, bighead carp, squid, octopus, catfish, etc., so do you know catfish? It is also fish, and catfish look similar. So, catfish is what fish? And catfish how to distinguish?

A, catfish is what fish?

1, catfish is a catfish, fish, shad genus fish, the scientific name of long-nosed shad, Shanghai, called "catfish mouse", Sichuan, called "river group", Guizhou, called "Xi fish", there is a name called "Shishou". A name called "Shishou", because it is perched in a cave sticking out its head like the head of the stone, but also because of its origin in Shishou.

2, catfish body is fusiform, smooth and scale-free body surface, pointed and long kiss, mouth crescent-shaped, 4 pairs of whiskers, small eyes, fat adipose fins, the caudal fin is y forked, body color pink, back slightly gray, white abdomen, fins for gray-black.

3, catfish is a fierce carnivorous demersal fish, generally living in the bottom of the water column, foraging for food also in the water column in the middle and lower activities; it likes to feed at night, juvenile fish to the planktonic species, hairy-winged, dipterous, etc. larvae for food, adult fish completely fish for food, food lack of each other when the predator.

4, catfish for the largest fish of its kind, common more than 2 to 4 kilograms, the largest individual up to 15 kilograms, male fish than the female fish individual large; its growth rate is faster, the year the hatchlings, the end of the year can be grown to 400 to 500 grams, the end of the second year can be grown to 1,500 grams, the sexual maturity of the 3 age, every year, April to June spawning.

5, catfish is a scaly fish, or the Yangtze River, one of the four fresh, not only high-protein, low-fat, and rich in a variety of nutrients, its meat is tender and tasty, and no fine spines, and fish fat fat, can be processed into a valuable fish maw, in the feudal society or court tribute.

6, catfish in China is mainly distributed in the east of the Liaohe River, Huaihe River, Yangtze River, Minjiang River, Pearl River and other waterways, the Yangtze River system is dominated by China's Heilongjiang River system and the Xinjiang Eerqis River is also distributed.

Two, catfish and catfish how to distinguish?

Difference 1, the family is different: they all belong to the catfish order, but catfish is the family of Luru, the genus of fish, catfish is the family of catfish, catfish fish.

Difference 2, the body surface is different: their body surface are not fish scales, but the catfish head is relatively small, there are two dorsal fins, the tail is forked; catfish head is relatively large, there is only a dorsal fins, the tail is a rounded fan, the body surface of the mucus.

Difference 3, body color is different: catfish body color is pink, back slightly gray, white abdomen, fins for gray-black; catfish body color is usually dark brown or gray-black, slightly dark cloudy patches.

Difference 4, habits are different: they belong to the fierce carnivorous bottom fish, and are night feeders, but catfish reach sexual maturity at the minimum age of 3 years, longer life expectancy, the highest age of 22 years old; catfish is generally an age of sexual maturity, life expectancy is very long, up to more than 70 years.

Difference 5, eating different: catfish can be chopped steamed, black bean sauce steamed, stewed sauce, braised, black bean roast, etc., its meat is tender and tasty, no fine thorns, swim bladder is very fat; catfish can be steamed, stewed, boiled in soup, braised, do meatballs, etc., and the meat is tender, less thorns.

Difference 6, the efficacy of different: catfish is a high-protein, low-fat food, liver and blood, reduce cholesterol, cardiovascular protection, enhance immunity, etc.; catfish contains more protein and fat, nourishing the blood, supplementation of gas, appetite, diuretic, lactation and other effects.

Summary: catfish is the scientific name of the long-nosed shad, is a catfish-shaped order, the family of fish, shad genus fish, belonging to the ferocious carnivorous demersal fish, scaly fish, fish of the same kind of fish in the largest fish, it is similar to the catfish, there are six ways to differentiate between each other.