的;abbreviate heterocercal Tail in which the vertebral axis is prominently flexed upward, only partly invading upper lobe of caudal fin, fin fairly symmetrical externally.
普通歪型尾鳍尾部的脊椎轴明显地弯曲向上,只有部分伸入尾鳍上叶，鳍的外部大致对称。
abbreviate heterocercal Tail in which the vertebral axis is prominently flexed upward, only partly invading upper lobe of caudal fin, fin fairly symmetrical externally.
普通歪型尾鳍尾部的脊椎轴明显地弯曲向上,只有部分伸入尾鳍上叶，鳍的外部大致对称。
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