If cultured fish is fed with wild stock, are we doing more harm than good when we buy fresh from the farm?
The fact that nearly three quarters of the world's fisheries are dangerously close to depletion makes aquaculture seem like our only chance at meeting the ever-growing demand for seafood. But it takes fish to grow fish: Most of the fish meal used in today's aquaculture feed is made from small, oily specimens such as anchovies and sardines. A huge load of these "forage" fish-roughly a third of the global catch-is turned into fish meal every year. The Pew Ocean Commission estimates that it takes four pounds of wild fish to produce one pound of farmed fish. So what's the deal?