Catfish don't bury. Burying refers to untidiness, filth and dirtiness, which is generally used most in the three northeastern provinces. Although catfish generally live in dirty environment, and some even live in stinking ditches, they also eat some dirty food, such as some rotten food or garbage. However, this does not mean that they are dirty. Because they will digest after eating these foods. Moreover, the cultured catfish will live in water with good water quality, and the food they feed is clean, so it is not dirty. Catfish is a warm-water fish, mainly inhabiting the middle and lower reaches of rivers, reservoirs, lakes and swamps, and living in still water or slow-flowing places with abundant aquatic plants. Catfish is a fierce carnivorous fish with sharp jaws and short stomach.