Willi wrote:

I don't get your point.

Some hatcheries supplement declining species of anadromous fish. The
Sawtooth Hatchery near Stanley, for example, breeds and stocks
steelhead, chinook, and sockeye. The fish aren't declining because of
poor spawning habitat. That's nearly pristine. The main cause of the
decline is almost certainly a series of dams on the Lower Snake and the
Columbia. (Although there's plenty of disagreement among politicians
about that, there's little disagreement among fisheries biologists.)

The ultimate solution is to remove some or all of the dams, and
eventually that will happen, because they make no economic sense. In the
meantime, the hatcheries are a stopgap measure. Your Point 2.

My point is that if hatcheries must be used, even temporarily, they
could possibly be used in a better way -- in a way that minimizes
genetic problems. But it would cost more money.