Fish is a staple in the diet of many Africans.
你可以根据鳍的形状来辨认这种鱼。
You can recognize the fish by the shape of their fins.
北冰洋里有鱼受到污染了吗?
Have any fish been contaminated in the Arctic Ocean?
那底下有很多鱼，快下钩吧。
There's a mess of fish down there, so get your lines in the water.