heterocercal fin
英
美
- 歪尾鳍
详细释义
Noun:
-
a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks
双语例句
- The lower lobe of the deeply forked caudal fin is longer than the upper lobe.
尾鳍深叉型，下叶比上叶长。 - Old World freshwater catfishes having naked skin and a long anal fin more or less merged with the eellike caudal fin.
东半球的淡水鲇鱼，体表无鳞，有类似鳗鱼尾鳍的很长的臀鳍。
相关词汇
- homocercal fin 正尾鳍
【反义词】
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