Catfish is pronounced nián yú.

The earth catfish is a genus of catfish in the family Cattidae, also known as catfish, local catfish, two-bearded catfish, and so on, like to live in the near-shore cracks in the rocks, deep pits, the bottom of the roots of the earth or stone holes, eyesight is weak, ambush by day and night, carnivorous, by the sense of smell and the two pairs of tentacles to hunt for food, the common individual is generally within 1 kg. Common individuals generally within 1 kg, the largest individual up to 2 ~ 3 kg.

Catfish, the same as catfish. Sub-species more, common catfish (earth catfish) large mouth catfish, bearded catfish (pond catfish) leather bearded catfish (Egyptian bearded catfish) Hakka commonly known as the pond slippery fish catfish, animal kingdom - Chordata - Chordata subclass - Spoke-finned fish - catfish - catfish - catfish family - catfish - catfish species. Mouth *** 4 whiskers, upper long lower short, carnivorous, mostly wild, the water quality requirements are not high, can be artificially cultured.

Catfish is introduced as follows:

Native bearded catfish, also known as pond jack, pond hornfish. Animal kingdom - Chordata - Chordata subphylum - Radiolaria - Catfish - Bearded catfish family - Bearded catfish genus - Bearded catfish species. 8 whiskers, 4 on each side of the top and bottom. Body color yellow, wild fish grow slowly, generally weighing no more than 1 city pound, high nutritional value, good taste. It can be cultured artificially and has a large market potential.

Also known as Egyptian bearded catfish, Egyptian pond fish, introduced from Egypt. Animal kingdom - Chordata - Chordata subphylum - Spoke-finned fish - Catfish - Bearded catfish - Bearded catfish family - Bearded catfish genus - Leather-bearded catfish species.

8 whiskers, black body, individual huge. Most of the artificial culture, the growth rate is very fast, feeding a year can weigh 2 kilograms, individuals up to 10 kilograms or more. Survival of water quality requirements are very low, low oxygen resistance. Meat quality is not very good, the market price is cheap. But it is easy to breed, fast growth rate, there are many people breeding.

8 whiskers, black body, individual huge. Most of the artificial culture, growth rate is very fast, feeding a year can weigh up to 2 kilograms, the largest individual up to 10 kilograms or more. Survival of water quality requirements are very low, low oxygen resistance. Meat quality is not very good, the market price is cheap. But it is easy to breed, fast growth, there are many people breeding.