Catfish (nián) fish (Catfish) commonly known as pond lice, also known as wai head fish.

Nocturnal, during the day quietly hide in the pit at the bottom of the river or under the roots of trees. A large eater, such as the large species of Danube catfish that will attack small waterfowl or mice.

Catfish eggs are poisonous and accidental ingestion can lead to vomiting, abdominal pain, diarrhea, breathing difficulties, and in severe cases, paralysis.

Usually eat some small fish, shrimp and some decaying animal good carcasses, etc. 。。。。

I got it from somewhere else, but that's what I thought .