1, white catfish and black catfish difference: the difference between them is mainly different colors, white catfish body color is white, while the black catfish body color is black.

2, catfish, also known as long-nosed shad, river group, fat kingfish, catfish, is a kind of carnivorous fish living in the bottom, like to small fish and aquatic insects for food. Its growth rate is fast, the largest individual can reach 15 kilograms, its meat is delicious and nutritious. Catfish in China is mainly distributed in the east of the Liaohe River, Huaihe River, Yangtze River, Minjiang River, Pearl River and other waterways, mainly in the Yangtze River system, China's Heilongjiang River system and Xinjiang's Eerqis River is also distributed.

3, catfish longnose shad body long, conical kiss, forward significantly protruding. Mouth inferior, crescent-shaped, lip hypertrophy, small eyes. Whiskers 4 pairs, tiny. Scaly, dorsal and pectoral fins of the hard spines of the posterior margin serrated, fat fins, caudal fin y forked. Body color pink, slightly gray back, white abdomen, fins are gray-black. Catfish is a kind of scale-free fish, not only high protein, low fat, and rich in a variety of nutrients, its meat is tender and fresh, and no fine spines, and fish fat is fat.