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1亲鱼的来源与选择从饲养的商品鱼中挑选个体大、体质健壮、无病无伤、身体完整无损的成鱼作为后备亲鱼在池塘培育一定时间后,再筛选发育好的作亲鱼用,雌雄比1∶1。成熟的雌鱼要求腹部膨大、柔软,有弹性,将鱼尾向上提起,卵巢轮廓明显,生殖孔略圆、稍大、红肿,微向外突,用挖卵器
1 The origin and choice of broodstock From the commodity fish raised in the selection of individual large, strong constitution, disease-free, intact body intact fish as a reserve broodstock cultivate a certain period of time in the pond, and then screened well-developed for broodstock, male and female Than 1: 1. Mature female requires enlargement of the abdomen, soft, flexible, the fish tail lifted up, the outline of the ovary obvious genital hole slightly round, slightly larger, inflamed, slightly outward, with the ovipositor