Very cool read. Like everything is life, as well as fisheries, "it's complicated." The Tucannon is another example of this complexity. There is an ongoing change in what fish are used as the local stock. They are switching to endemic stocks as I understand it. Not likely "native" but unclipped fish that are the product of wild rearing. And there was some crying about this transition. Mostly about the 2-3 years (or more) of reduced angling opportunity as hatchery stockings based on this process increase to harvestable numbers, and again get clipped. But since some years 80% of the fish planted in the Tucannon (which were basically Wallowa River fish) are estimate to cross Lower Granite Dam (in other words, go right past the Tucannon, and never "go home") the long term result could not only be more local spawners descended from endemic fish, and less pond brats filling the void, but better fishing as the planted fish return to the river the were loosed from. Hatcheries can be used for good and evil. Unilateral declarations about them are not likely accurate. FWIW, I think most rivers should use endemic fish as brood. Just seems like a better idea. Maybe it is more expensive. For example you could not breed and raise stocks from 10 rivers in one big pond. But the results per $ spent might go up.