“Steelhead turned out by hatcheries quickly evolve into a kind of swimming livestock with a poor chance of surviving in the wild and may carry their inferior traits into wild populations that biologists are trying to save, a new study of fish in Oregon’s Hood River has found.”
Read the rest of the story: Hatchery fish found to be poor at survival. A study indicates steelhead are so bad at surviving that they are little help to wild runs. By Michael Milstein. The Oregonian.