However, they report that their goal is made more difficult because of the variety of methods used salmon production in Norway.

“There is no shared basic knowledge. Things are done differently at each facility according to the lessons they’ve learnt,” Trine Yteased varies. Roughly half are released in summer, while 27 per cent of the fish are released in January and February. This seems to restøyl, a senior scientist at Nofima, explained.