Sustainable fish farming can replace hunting as demand rises

It is widely understood that hunting wild fish is not sustainable. Fish farming, or aquaculture, is being promoted by some as a sustainable replacement to catching wild fish. And a new generation of fish farming approaches promise to address many of its past controversies. The portion of global fish stocks that are classed as overfished has risen from about 10% in 1974 to over 30% today. Other estimates place the number of fish stocks overexploited at as high as 85%.
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