挑选成熟亲鱼 催产亲鱼的成熟与否，决定了催产效果的好坏。选择亲鱼时，一般根据其外部特征来鉴别成熟度。成熟好的雌亲鱼腹部膨大、柔软而富有弹性。草鱼、白鲢用手指摸可触及肋骨，生殖孔突出，微红。未成熟的雌亲鱼，前腹较圆但后腹部瘦削，不够松软，触无弹性，生殖孔不突 The maturity of the selection of mature broodstock pro-birth broodstock determines the quality of oxytocin. When choosing broodstock, maturity is generally identified based on their external characteristics. Mature females belly swollen, soft and elastic. Grass carp, silver carp can touch the ribs with your fingers, genital hole prominent, reddish. Immature female fish, the anterior abdominal relatively round but thin after the abdomen, not soft enough, touch inelastic, reproductive pores do not suddenly