Silurus soldatovi, whose English name is Northem sheatfish, belongs to Silurus, Silurus and Silurus. Commonly known as: Huaitou fish, Huaizi, Huaitou catfish. Mainly distributed in the Heilongjiang River system from Heihe City to Fuyuan County, Songhua River, Nenjiang River and Wusuli River, etc., and also produced in the lower reaches of Liaohe River; Russia * * * Youth League City is becoming less and less.