accessory caudal ray

• 尾鳍； 附属鳍条； 尾鳍附属鳍条

accessory caudal ray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。