Spawing at the same time and diluting the genes of wild fish are two separate things, and one does not automatically lead to the other...as a matter of fact, there are plenty of findings that even when they spawn together (actually spawn together, like a hatchery buck and native hen) that the introgression is "zero" or "near zero", since they fail to return any surviving adult fish.

Again, in the time it's taken you to post those long and factually incorrect posts you could have just searched here on PP for the dozens of times this issue has come up and been talked about.

Or don't...doesn't matter much to me.

Fish on...

Todd