The plural of 'fish' is 'fish'.

‘fish’的复数形式仍然是‘fish’。

The fish breeder sells exotic aquarium fish to hobbyists.

这位鱼繁殖者向业余爱好者出售奇异的观赏鱼。

A fish farm uses natural fertilizers to promote fish growth.

一个养鱼场使用天然肥料来促进鱼类的生长。

A shy fish is usually hard to spot among other fish.

一条害羞的鱼通常很难在其他鱼中发现。

The fish hatchery is an important facility for breeding young fish.

鱼苗场是一个重要的鱼类繁殖设施。

The fish smells stinking.

这条鱼闻起来很臭。

Some species of fish are carnivorous, feeding on smaller fish and crustaceans.

某些鱼类种类是肉食性的，以小鱼和甲壳类生物为食.

The fish is swimming in the tank.

鱼在水箱里游动。

The aerator in my fish tank helps maintain oxygen levels for the fish.

我鱼缸里的增氧机有助于维持鱼的氧气水平。

Fish get oxygen from water.

鱼从水中获取氧气。