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文昌魚是魚類嗎

來源:鮮淘網 2021-06-03 21:40:31      鮮淘網歡歡 手機版

　　文昌魚并不是魚類，它屬于頭索動物亞門腮口科，是無脊椎動物，而魚類是一種變溫水生脊椎動物，所以文昌魚并不是魚。文昌魚外形和魚類比較像，但是主要依靠水流帶來浮游生物以及硅藻、植物等為食，到了晚上會離開沙窩到海面上生活。

　　文昌魚是不是魚類

文昌魚是魚類嗎

　　文昌魚屬于頭索動物亞門腮口科，不屬于魚類。魚類一般指的是以腮呼吸，通過尾部和軀干部位的擺動以及鰭的協調作用游泳和憑借上頜攝食的變溫水生脊椎動物，但是文昌魚是沒有脊椎骨的，所以并不是魚。

　　文昌魚外形上和魚類比較相似，但是在身體構造和各種生理機能方面和真正的魚有一定區別，它適合在溫暖的海中生活，喜歡半截下身埋在沙里面，僅前端露出沙子外面，主要依賴水流帶來浮游生物以及硅藻、植物等生存。

　　白天的文昌魚并不活躍

　　文昌魚白天并不活躍，到了晚上的時候就會離開沙窩，就如同利劍一樣飛快的游到海面上生活，但是它的“膽子”比較小，一旦受到驚擾，就會立刻游回沙窩里面躲起來。

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