Fish farm problems highlighted

Some types of fish farm have major environmental impacts, and may actually worsen problems of overfishing, says a new report in the journal, Science.


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Particularly salmon and shrimp farms were criticised for using around three times as much wild fish in feed as they actually produce, and for causing serious pollution problems – one Nordic fish farm was said to discharge nitrogen equivalent to untreated sewage from 3.9 million people.

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