鲫鱼是人们熟知的也是人们喜食的一种优质淡水鱼类。它向味鲜美，营养丰富（含蛋白质18．3％，脂肪6．9％）。长期以来，鲫鱼没有在人工养殖上受到重视，主要原因是鲫鱼生长缓慢，在长江流域，250克的鲫鱼要养殖两年以上。异育银鲫是用黑龙江省方正县双凤水库的银鲫（简称方正 Crucian carp is a well-known freshwater fish that people eat. It tastes delicious, nutritious (18.3% protein, 6.9% fat). For a long time, the crucian carp has not been taken seriously in the artificial breeding, the main reason is the slow growth of the crucian carp, in the Yangtze River valley, 250 grams of crucian carp to be cultured for more than two years. Allogynogenetic crucian carp is made of silver crucian carp (Shuangfeng reservoir, Founder County, Heilongjiang Province)