fish用作可数名词指“鱼的条数”时单数和复数形式相同（two fish两条鱼），指“鱼的种类”时复数形式才为fishes（two fishes两种鱼）。

短语搭配：

Salted fish咸鱼腌鱼腌制鱼盐腌的鱼

dried fish鱼干文昌鱼干干鱼粉干鱼

相关介绍

1、The fish lay thousands of eggs at one time.

这种鱼一次产卵数千个。

2、These fish are found in shallow waters around the coast.

这些鱼生长在海边浅水水域。

3、I've never been a great one for fish and chips.

我从来不是个好吃炸鱼薯条的人。

4、There are about 30 000 species of fish in the world.

世界上约有3万种鱼。

5、Fishing is good at high water.

高水位有利于钓鱼。