单词anal fin
un.: 臀鳍
臀鳍
Similar to G. affinis, the anal fin of male would develop into a gonopodium .
雄性孔雀鱼与食蚊鱼一样，臀鳍会演化为生殖管。
The tail region, Bordered Below by a long anal fin that the fish undulates to move about, contains the electric organs.
鳍的下缘有一长形臀鳍，依靠臀鳍的波动而游动。
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。
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。
A silvery blue fish(Oligoplites saurus)of Atlantic waters, having leathery skin, yellow fins , and five spines on the anal fin.
鳞？一种生活在大西洋中的银蓝色鱼类（蜥革？），长有革质皮肤和黄色的鳍，尾鳍上有五根脊刺。
male guppy mating of the anal fin into vehicles.
雄性食蚊鱼的臀鳍成为交配器等。
Dorsal and anal fin: control flow, to maintain a balance.
背鳍与臀鳍：控制水流、保持平衡。
7th and 8th ending in a dark blotch at the rear base of soft part of anal fin.
第7与第8在臀鳍的软棘的部位的后面基底末端形成一个黑色斑块。
In addition, the anal fin has a curvature that fits the round shape.
还有，尾鳍有一个弯曲度刚好适合鱼的圆型身体。