5.人工孵化受精卵遇到水后,卵膜很快吸水膨胀,若是健康的卵,则稍微透明,淡黄色。2～3日内经过多次细胞分裂,透明度逐渐减小,当出现黑色眼点时(眼球的黑色素),表明这样的卵可以孵化出鱼苗。如果卵变成不透明的乳白色,外部长满白毛,这说明卵已腐败,感染了水霉菌,要及时清除,以免 Artificial incubation of fertilized eggs encounter water, the omentum quickly water swelling, if healthy eggs, then a little transparent, light yellow. After several cell divisions within 2 to 3 days, the transparency gradually diminishes, and when black eyes (melanin in the eyeball) appear, it indicates that such an egg can hatch the fry. If the egg becomes opaque milky, the external covered with white hair, indicating that eggs have been corrupted, infected with water fungus, to promptly removed, so as not to