Global aquaculture produces more than half the world’s fish supply. Far from being the remedy to overfishing, it's been packaged and resold as yet another facet of the same problem. Cue worried NGOs and scientists, suddenly embroiled in a numbers game of how much wild fish makes how much farmed fish?
Sadly, the argument is not that simple, and here lies the slippery slope. As commonly known, five metric tons of wild fish must be used to eventually produce a metric ton of salmon, but less commonly known among the general public is the surplus fishmeal this inevitably creates, meaning global aquaculture actually uses less fishmeal and oil than it produces.
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