Research biologists in Washington state have found that when juvenile hatchery steelhead leave the hatchery rearing pond when they are ready to emigrate – of their own volition, as it were – that they tend to return as adults in larger numbers.
Research biologists in Washington state have found that when juvenile hatchery steelhead leave the hatchery rearing pond when they are ready to emigrate – of their own volition, as it were – that they tend to return as adults in larger numbers.