大规格优质鱼种是影响网箱鲤鱼成鱼养殖产量和经济效益的主要制约因素之一.池塘培育的鱼种因拉网操作和运输中损伤,以及入箱后不适应网箱环境,入箱初期死亡率较高,此外,网箱养鱼需要鱼种量较大,因此占用池塘面积较多,网箱培育鱼种则没有上述缺点,但以往培育的鱼种一般个体重在50克以下,在成鱼箱中当年很难达到0.5公 Large-size high-quality fish species is one of the main factors that affect the yield and economic benefits of carp adult fish farming.Fishes cultivated in the pond are not suitable for the environment of the cage due to the operation and transportation of the net, The initial mortality rate is higher. In addition, the cage fish needs a large amount of fish species, thus occupying more pond area. There is no such disadvantage as cages cultivating fish species. However, in the past, fish cultivated in the past generally weighed below 50 grams, In the fish tank that year is difficult to achieve 0.5 public