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海立鱼是底层鱼吗

更新时间: 2020-08-15 00:00:00     

一生中大部时间栖息于海洋或内陆水域之底层或近底层的鱼类,是一种依生态学类型划分鱼类的方法之一,常使用底拖网、底刺网或底延绳钓等渔具捕捞,底层鱼类因常生活于底层或近底层,游泳能力较差,鱼体外形多具纺锤、平扁或延长等各种体型,尾部肌肉不太发达,多数为下位或位于头的腹面,有的种类具有口须、颏须等触觉器官,牙较发达或锐利,眼较大或小,无脂眼睑。

关键词: 底层

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