pelvic c fin腹鳍
Pelvic Fin Posterior Margin腹鳍后缘
Pelvic fin inner margin腹鳍内缘
origin of pelvic fin腹鳍起点
pelvic fin length腹鳍长
Pelvic Fin Base腹鳍鳍基
Pelvic Fin Anterior Margin腹鳍前缘
Pelvic fin base length腹鳍鳍基长
Pelvic fin height腹鳍高
N（名词） either of a pair of fins attached to the pelvic girdle of fishes that help to control the direction of movement during locomotion 腹鳍