Oncy

Good points but I have a question. How can hatchery fish, with two generation in the hatchery, perform so poorly in the wild and yet the first generation is equal? I don't see how that is biologically possible? I understand that it is statistically possible to show that, but what is the supporting biology?

Further, we do know that even Chambers Creek fish have been successful spawning in the wild. Apparently the streams where this occurs are few and far between but there are situations when they can make it. They have even, if memory serves, established at least one self-sustaining population that seems to remain spatially separate from the local stock.