湘云鲫是由经多代自交且能保持稳定遗传性状的四倍体(4N)新型鱼类种群(简称“基因库鱼”)做父本,与日本白鲫(2N)母本杂交而产生的后代。其生长快(比普通鲫鱼生长速度快2～3倍,当年水花鱼苗可达0.5kg)、自身不育(3N=150),生长不受性成熟局限、食性广、耐低温低氧(四大家鱼停止生 The crucian carp (Carassius auratus gibelio) is derived from a new type of tetraploid (4N) new fish (“gene pool fish”) that has been selfing for many generations and can maintain stable genetic traits and is crossed with the Japanese white carp (2N) Generated offspring. Its growth is quick (2 ~ 3 times faster than that of ordinary carp, when it reaches 0.5kg), it is infertile itself (3N = 150), its growth is not limited by sexual maturity, its diet is broad and its resistance to hypothermia and hypoxia Fish stop students