Catfish is the favorite living in sewage, and there is no big competition.

And it has the reputation of a river bottom sanitation worker.

Catfish, Chordata, Animal kingdom, Actinidia, Silurus, Silurus, Silurus, Catfish species.

***4 beards on the mouth, long on the top and short on the bottom, carnivorous, mostly wild.

The food chain is very extensive and has strong vitality.