heterocercal

heterocercal

1. any of numerous elongate mostly marine carnivorous fishes with heterocercal caudal fins and tough skin covered with small toothlike scales

众多的流线形身体海生食肉鱼，歪尾，有尾鳍、坚韧的表皮和小齿状鳞片

2. 3.any of numerous elongate mostly marine carnivorous fishes with heterocercal caudal fins and tough skin covered with small toothlike scales.

众多的流线形身体海生食肉鱼，歪尾，有尾鳍、坚韧的表皮和小齿状鳞片，。

3. 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。

4. heterocercal tail

歪尾

5. heterocercal fin

歪尾鳍