天气预报 > 其他 > 牡丹鱼一年繁殖几次
牡丹鱼一年繁殖几次
更新时间: 2020-06-30 00:00:00  

牡丹鱼平均两个月左右繁殖一次,一年6次。

牡丹鱼繁殖水温25到26摄氏度。繁殖期间,雄鱼的体色会逐渐变深、变亮,臀鳍演化成输精管。雌欲腹部膨大,体色比雄鱼要浅。牡丹鱼能与月光鱼、剑尾鱼杂交。

牡丹鱼为纺锤形,头小眼大,吻尖,胸腹部较圆,近尾部渐趋侧扁,尾柄宽阔,尾鳍圆弧形,背鳍位于身体中部偏后,外缘圆弧形。

关键词: 牡丹 繁殖

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