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异育银鲫是以方正银鲫为母本，兴国红鲤为父本的杂交子代，其生长速度较方正银鲫快34．7％，较其他鲫鱼与兴国红鲤的杂交子代快10％。异育银鲫具有良好的生长优势和经济性状，深受市场欢迎。但由于多年来品种混杂，亲本退化，失去了原种亲本杂交的生长优势，生长速度明显下降，商品鱼价格偏小，直接影响到生产经济效益。为此，江苏省海洋与渔业局于1998年将“异育银鲫的亲本引进”列入三项更新工程项目，该项目由江苏省水产技术推广站与泰兴市水产良种场、洪泽县水产良种场及金坛市水产技术指导站共同承担。
Allogynogenetic crucian carp is a hybrid progeny with Founder silver crucian carp as its mother and Xingguo red carp as its male parent, its growth rate is 34.7% faster than that of Founder silver carp and 10 times faster than that of other crucian carp and Xingguo red carp %. Allogynogenetic crucian carp has a good growth and economic traits, welcomed by the market. However, due to the variety of hybrids over the years, the parents degenerated, lost the original parental hybrid growth advantage, the growth rate decreased significantly, the price of small commercial fish directly affect the production of economic benefits. To this end, Jiangsu Provincial Bureau of Oceanology and Fisheries in 1998 will be “the introduction of heterophylla crucian carp” included in the three renovation project, the project by the Jiangsu Provincial Fisheries Technology Extension Station and Taixing aquatic breeding farm, Hongze County Aquatic Seed field and Jintan Fisheries Technical Co-operation Station shared.