anal fin
英
美
- 臀鳍,臀
双语例句
- 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。 - The male shows elongated rays in its anal fin and yellow pearl organs on the jaws and opercula during breeding season.
雄鱼的臀鳍鳍条特长，交配季节两颌和鳃盖会长出黄色的珠星。
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