一、选择好亲鱼选择体质健壮、体形肥满的无病无伤的亲鱼。雌鱼应选择3龄以上,体重一般3～5千克的,雄鱼选择2龄以上,体重1.5～2千克的个体即可。在非繁殖季节,雌鱼、雄鱼要分塘饲养,以便日常管理,特别是避免有些成熟早的亲鱼在雌、雄同塘时提前产卵。一般每667平方米放雌鱼50尾 First, choose a good selection of broodstock physique sturdy, body fat full of disease-free innocuous broodstock. Female should be selected more than 3 years old, usually 3 to 5 kg body weight, male over 2 years old, weighing 1.5 to 2 kg of the individual can be. During the non-breeding season, females and males should be kept in separate ponds for routine management. In particular, some mature brooder fish should be prevented from laying eggs in advance when they are male or female. The general 50 per 667 square meters of female fish