一、鱼种选择品质优良的鱼种具有对饲料的消化吸收率高、饲料系数低和生长速度快等优点。因此,一定要选择遗传性状优良、体质健壮、无病无伤、规格整齐的鱼种进行放养。二、放养模式水质较肥的池塘,鲢鱼、鳙鱼放养的比例应占60%,其他鱼类占40%(如草鱼、鳊鱼、鲤鱼、鲫鱼等);水质较瘦的池塘,草鱼、鳊鱼等放养比例应占60%,其他鱼类占40% First, the selection of species of fish species with good quality of the digestion and absorption of feed, low feed rate and fast growth and so on. Therefore, we must choose good genetic traits, physical fitness, disease-free and non-injury, neat specifications of fish stocking. Second, the stocking mode Water quality ponds, silver carp, catfish stocking should account for 60% of the proportion of other fish accounted for 40% (such as grass carp, bighead carp, carp, crucian carp); water quality lean ponds, grass carp, Catfish and other stocking should account for 60%, other fish accounted for 40%