caudal fan

• 尾扇； 尾鳍

caudal fan的用法和样例：

例句

1. 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。
2. 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。