Bull Trout Recovery Plan

I just learned something. I always thought a "Bull Trout" was an artificial hybrid between a Brown and a Rainbow. I didn't realize it was like a Dolly Varden. Can they not breed them in hatcheries and re-stock?. Also, protect the waters they live in? It doesn't seem like it should be that complicated. Fix the waters, and put the fish back in. And only have Catch and Release, until they get stabilized, anyway. But, what do I know? I think most things are a lot more complicated than they need to be. It's just me.