fluke|flukes

渔民在鱼的肝脏里发现了一个意外发现。

The fisherman found a ___fluke in the fish's liver.

鲸鱼在水面上轻轻摆动尾鳍。

The whale gently waved its ___flukes above the water.

这条比目鱼看起来像是一种罕见的品种。

This ___fluke looks like a rare species of flatfish.