部;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
鳍部
脊椎轴明显地弯曲向
,只有部分伸入鳍叶，鳍外部大致对称。
abbreviate heterocercal Tail in which the vertebral axis is prominently flexed upward, only partly invading upper lobe of caudal fin, fin fairly symmetrical externally.
普通歪型鳍部脊椎轴明显地弯曲向,只有部分伸入鳍叶，鳍外部大致对称。
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