As cool as browns are ( I love 'em!) I dont think they would coexist well in an environment with anadromous spawners. The browns are such ravenous eaters of fry. You would be adding fuel to the fire of a fragile ecosysytem. Then again, it might be similar to the northern systems that are full of dolly varden and salmon and steelhead. I think Dollies are as pisciverous as browns.
Jay
Bookmarks