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鎏金鱼怎么分公母
更新时间: 2020-06-29 00:00:00  

可以通过到下特征来分辨:

雄鱼:胸鳍的第一鳍条有白色粿粒状的凸出物,俗称追星。头部没有肉瘤的鱼种,例如琉金、蝶尾等,在鳃盖上也有追星。有研究指出此追星是雄鱼在追逐雌鱼用以触碰雌鱼来刺激产卵。排卵时雄鱼会以头,身体来冲撞,推挤雌鱼的腹部、肛门。用手挤压雄鱼的鱼腹时会有白色的精液排出;

雌鱼:雌鱼的腹部较肥大,用手触摸腹部时则有松软的感觉。肛门中间的凸出明显,看起来像是一粿卵黏附上肛门上。用手挤压鱼腹时会有透明的卵排出。

关键词: 金鱼 怎么

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