一、体质要求体质好的鱼苗和鱼种应该是规格一致，游动活泼，躯体匀称，背尾饱满，鳞鳍完整无创伤，体色鲜艳无寄生物。二、拉网锻炼鱼苗应在肉眼可看到鳔点出齐、开口吃食、体呈淡黑色时起运。注意如果运输时间在１２小时以上时，体色还应浅些。孵出时间长、体色已经变黑或鳔 First, the physical requirements Good physical fry and fingerlings should be the same specifications, swimming lively, body symmetry, back full, scales fin complete non-invasive, body color bright no parasites. Second, pull the net fry fish should be visible in the naked eye Qi point out, open food, the body was light black shipped. Note that if the transport time in 12 hours or more, the body color should be shallow. Hatching a long time, body color has been black or 鳔