The Internet has been circulating a "catfish, the world's dirtiest fish" news, the post said a city of a fish pond floating in a large amount of garbage, surrounded by chicken pens and pig pens, pig manure, chicken manure, etc. are discharged into the fish pond, the stench is overwhelming, and in the water is swimming catfish. Catfish really that dirty?

Truth:

Catfish is indeed an omnivore, and its main food includes aquatic insects, organic debris, etc. It also eats animal feces, small fish and rodents, and other living things. But in aquaculture, animal manure is a cheap, non-toxic natural fertilizer that is fine as long as it is handled formally.

Catfish can survive in a dirty environment, but that doesn't mean they "love to live in dirty water". If the water body is particularly poor, catfish will also grow poorly, will be poisoned, and even death, the farm will never do "pollution of fish ponds" such as losing money. From the current data, the vast majority of regular breeding, regular water in the catfish does not exist in the heavy metals and other safety issues, is safe to eat.