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1·Shellfishes do not belong to the fishes proper.

贝类严格说来不属于鱼类。

2·There are 5000 kinds of Marine fishes, thousands of shrimps and prawns, crabs, shellfishes and aquatic plants.

我国是个海洋渔业大国，海洋鱼类5000多种，虾、蟹、贝、藻类千余种。

3·In the researchers' experiment, that was already enough to stunt shellfishes' growth and make their shells thinner.

在这些研究者的试验中，这已经足以阻碍甲壳类生物的生长，让它们的甲壳变薄了。

4·We went for some swimming crabs first, two for each, then we bought some hairy crabs and then two different shellfishes.

先买了梭子蟹，每人两只，然后是大闸蟹和两种海贝。

5·Fishing areas means spawning grounds, feeding grounds, wintering grounds and migration channels of fishes and shrimps , and the mariculture waters of fishes, shrimps shellfishes and algae.

渔业水域，是指鱼虾类的产卵场、索饵场、越冬场、洄游通道和鱼虾贝藻类的养殖场。