date:May 16, 2012
treme variations in stream flows. Hatchery fish, as the name implies, are hatched from eggs fertilised in a controlled environment and raised in captivity until they are big enough to release into the natural environment. They lack the genetic diversity of wild fish that provides insurance against fisheries collapses.
Hatcheries have been used for many years in an attempt to increase catch in the over $3 billion Pacific salmon commercial fishing industry and to offset losses of wild salmon th