多鰭魚科 | 水產百科網
Nilebichir.png·多鰭魚Polypterusbichir.科學分類·e.界:,動物界Animalia.門:,脊索動物門Chordata.綱:,腕鰭魚綱Cladistia.目:,多鰭魚目Polypteriformes
多鰭魚科(學名:Polypteridae)是多鰭魚目(Polypteriformes)目前僅存的一科,現存二屬,又稱恐龍魚,是比較古老的輻鰭魚類,全身有類似骨板的硬鱗,胸鰭有小的肉質葉,有鰭基骨,並不直接和肩胛骨連接,多鰭魚有厚實的硬鱗,表面光滑有黏膜包裹,背部依據品種不同而有6至20個棘狀背鰭, 這些棘狀背鰭中的每一條都有鋒利的刺狀鰭骨。他們的下頜結構比起真骨附類的魚 ,更相似於四足類的結構。 多鰭魚有一定原始特徵。這些的特徵是有的肉質基葉的胸鰭,這和腔棘魚相似,而他們也有呼吸孔 (spiracles)的。 所有多鰭魚目成員都在非洲的淡水河、湖區棲息,主要為沼澤、淺氾濫區和出海的河口。[1][2]
他們也有基礎的肺部,可以從空氣中吸取氧氣,當在水中的氧氣不足時,多鰭魚會快速地游到表面吸氣,此魚在幼魚期會像兩棲類的有外鰓。在這些種類之中的最大長度為30cm至100cm以上。
參考資料[編輯]
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Polypterus bichir, Nile bichir | 水產百科網
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多鰭魚科 | 水產百科網
Nile bichir.png · 多鰭魚 Polypterus bichir. 科學分類 · e. 界:, 動物界 Animalia. 門:, 脊索動物門 Chordata. 綱:, 腕鰭魚綱 Cladistia. 目:, 多鰭魚目Polypteriformes Read More
相關資訊整理
【安索琪恐龍Polypterus ansorgii】多鰭魚科
水產分類:台灣常見的大陸水產品圖說中文名稱:安索琪恐龍學名:Polypterusansorgii科別名稱:多鰭魚科命名學者:Boulenger1910