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A comment on From China, The Future of Fish . Parent comment

Re:From China, The Future of Fish by jon914 on Sunday October 24, 2010 @08:41PM (#1827883)
Some farmed fish requires fish to feed them, which is unsustainable in itself when you're feeding N pounds of other fish to produce 1 pound of the edible type.

See: http://www.nicholas.duke.edu/thegreengrok/farmedfish-pnas092...

Recently, I've seen more of a shift to grains, but that reduces the nutritional value of the fish.

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Re:From China, The Future of Fish by netcan on Sunday October 24, 2010 @10:26PM (#1828192)
Why would shifting to grains reduce the nutritional value of the fish? Is cat more nutritious than lamb?
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Re:From China, The Future of Fish by jon914 on Sunday October 24, 2010 @11:20PM (#1828335)
Fish feed consists of small, less desirable fish such as sardines and mackerel. These are rich in omega-3, so shifting to grains reduces the quantity available in the fish.
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Re:From China, The Future of Fish by netcan on Sunday October 24, 2010 @11:28PM (#1828369)
OK I get it. You didn't mean the nutritional value of a pound of fish.
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