Over a fifth of the world's freshwater fish species of a century ago are now endangered or extinct. Half the world's wetlands have also disappeared over the past 100 years.

一个世纪以来，全球湿地消失了一半，淡水鱼种类中超过五分之一已经灭绝或濒临灭绝。

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Which is the example of the freshwater fish in salt water, or the saltwater fish in fresh water.

很典型的例子，淡水鱼放在在盐水中，或者咸水鱼放在淡水中。

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The science, art, and business of cultivating Marine or freshwater food fish or shellfish, such as oysters, clams, salmon, and trout, under controlled conditions.

水产养殖在控制条件下，科学、艺术及商业性培植海水或淡水食用鱼或介壳类，如牡蛎、蛤、鲑及鳟鱼。

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Green MSP Robin Harper's amendment, which urged the government to phase out the rearing of smolt or juvenile fish in freshwater open net-pens, fell, with two MSPs voting for it and 114 voting against it.

BBC: Decision time