This report by UK food waste campaigning organisation Feedback examines the use of wild fish and land by the Scottish farmed salmon industry. It finds that the industry, which is largely controlled by six companies, already uses the same amount of wild fish that the whole UK population purchases, and that it would need to use two-thirds as much again to meet its growth ambitions.
Furthermore, the industry uses land-based feed ingredients such as soya and palm oil, which present their own sustainability issues, including competition with using those crops directly as food for people.
The report calls for more transparency in feed sourcing in the sector - specifically, it calls for publication of publishing a full breakdown of quantities, types and sources of both wild fish and land-based feed ingredients.
Read the full report, Fishy Business: The Scottish salmon industry’s hidden appetite for wild fish and land, here (PDF link) and see media coverage in The Scotsman here. See also the Foodsource resource How do food systems affect fish stocks and marine habitats?