The order Siluriformes belongs to the class Teleost, with a total of 34 families, 310 genera, and about 2,316 species. my country has known 13 families, 32 genera, and 132 species. Siluriformes are all bottom-dwelling carnivorous fish, many of which are important food fish and also common sport fish. Most of them live in freshwater, and only the family Asteridae is widely distributed in tropical and subtropical waters. The fish of the order Siluriiformes are characterized by their elongated bodi