Robert, here is a quote from the article
"Nelson began applying DNA "fingerprinting"techniques on biosamples of both wild and hatchery salmon taken from the Chehalis River. Using 50 samples from hatchery stocks at the Bingham hatchery near Elma, and another 50 from unmarked wild fish provided by the Dept of Fish and Wildlife, Nelson concluded the two populations had remained separate, despite ample opportunity to naturally interbreed over the past several years. Conventional science suggests that the wild and hatchery fish are so closely related that intermixing is common, but Nelson't studies seem to challenge that assumption"

It seems that her DNA test dissproves what you said. The fish don't breed togther. If they did they would have similar DNA wouldn't they?

Fishhead5