一、鱼种越冬前做好检疫工作 鱼种入越冬池,要用5％的食盐水浸洗鱼种5分钟。在鱼种并池的移出和移入过程中,应该仔细,尽量避免鱼种擦伤。 二、加大鱼种规格 冬季鱼种以体内贮存的营养物质维持生命活动。当越冬鱼身体瘦弱、缺乏足够的营养贮备时,体内营养物质不断消耗,而蛋白质得不到补偿,就会因新陈代谢失衡而死亡,根据统计表明,鱼种体长大于7厘米,一般死亡率 First, the species before the winter to do a good job in quarantine fish species into the winter pool, to use 5% salt water immersion species for 5 minutes. In the fish species and pool out of the process of moving in and out, we should carefully, try to avoid fish species bruises. Second, increase the size of species Winter species to keep the body’s nutrients to maintain life activities. When the overwintering fish body is emaciated and lacks adequate nutrient reserves, the nutrients in the body are constantly depleted. However, if the protein is not compensated, it will die due to metabolic imbalance. According to the statistics, the fish species grow more than 7 cm long and the general mortality rate