There aren't to many options, if you can't sell them. I mean really, what would you do with a bunch of dead worthless fish. You can only use so many to fertilize the yard.
I heard Spring Creek hatchery gave a bunch of tule's to the state pen a couple years ago. I can't help but laugh when I think of the inmates reading a daily menu saying "Fresh Columbia Salmon." Mmmmmm, I bet they were disappointed.