Wild fish stocks squandered to feed farmed salmon, study finds

Wealthy nations accused of depriving poorer ones of nutrient-rich food and wasting mackerel, sardine and anchovy stocks

Shoppers' appetite for salmon is causing millions of tonnes of nutritious mackerel, sardines and anchovies to be wasted as fish feed, according to new research.

Its authors say farming salmon is an inefficient way to produce nutritious seafood, calculating that half to 99% of minerals, vitamins and fatty acids in the wild-caught fish are not retained when fed to farmed Atlantic salmon.