Tertio, Conseil said, the subbrachians, whose pelvic fins are attached under the pectorals and hang directly from the shoulder bone.

第三目是副鳍，康塞尔说，腹鳍是接在胸鳝下面和挂在肩骨上。

The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).

背鳍, 腹鳍, 胸鳍帮助（儿）对准水方向, 以这种方式来减少水对力。

Do you see the fins of the gold-fish? It has two breast-fins, two belly-fins, a back-fin, a tail-fin, and a fin on its under side near the tail.

你看见金鳍了吗? 金有两个胸鳍、两个腹鳍、一个背鳍、一个尾鳍, 还有尾巴附近一个臀鳍。

The Nopoli rock-climbing goby, no bigger than a few centimeters, scales hundred-meter-tall Hawaiian waterfalls, inching its way up by alternately attaching the suction cups on its mouth and pelvic fins.

诺波利攀岩虾虎，体型不超过几厘米，爬上百米高夏威夷瀑布，通过嘴部和腹鳍上吸盘交替吸附向上爬。