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来自维基百科,自由的百科全书
鰭足是在一些雄性動物身上發現的一種常用於交配的器官。
雄性軟骨魚綱的鰭足是由其後部的腹鰭形成的,是用來將精子送入雌性泄殖腔的插入器。在交配時,雄性的鰭足會先吸入水,然後連帶精子一起射入雌性的泄殖腔中。[1][2]
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