魚類學名詞

名詞 定義 abbreviate heterocercal Tail in which the vertebral axis is prominently flexed upward, only partly invading upper lobe of caudal fin, fin fairly symmetrical externally. 普通歪型尾鰭 尾部的脊椎軸明顯地彎曲向上，只有部分伸入尾鰭上葉，鰭的外部大致對稱。