Hatchery-raised salmon too crowded

Photo:University of GothensbergEvery year, large amounts of hatchery-raised young salmonids are released into Swedish rivers and streams to compensate for losses in natural production. Butthese fish generally survive poorly in the wild.. Researchers at the University of Gothenburg have discovered why: the young fish get too crowded at the hatchery.

The Swedish Research Council Formas is now granting 20 million SEK to a Swedish/Nordic research project. The goal is to find out how the hatcheries can be made more effective.