Catfish is a species of bony fish in the family Siluridae of the order Siluriformes, also known as pond lice or catfish. Its body is flattened on the side, its abdomen is flat and soft, it can expand or contract, its body height is greater than its head height, and the external contour of the whole body is chiseled. Living in a reservoir with abundant water, grass, and muddy bottom layer. During the day, it often hides in deep water and is active in foraging at night or dawn. After autumn, they live in deep water or mud to overwinter, and their feeding intensity decreases. When feeding, do not gather in groups and hide in the crevices of the underwater rocks to observe. Carnivorous, feeding on small benthic fish as well as small nearshore fish. Catfish have strong adaptability and fast growth, and have been listed as one of the three major freshwater fish species in natural water bodies in China.