The BakePacker (www.bakepacker.com) claims you can poach game fish in it, and if you remove the outer metal rim (I emailed them and they said it was okay to do so), it only adds 3 oz. to your setup. I have never cooked fish in it (I just bought it a few weeks ago), but I can tell you I've made great pancakes and biscuits, so I imagine the same principal would apply to the fish (i.e. you're not just steaming the fish). Best of all the cooking is done in a plastic bag, so the aroma issue is minimized. It fits in my Evernew Titanium 1.3L pot, so my total cooking setup, with the ability to bake and poach, still weighs 4 oz. less than the Jetboil! If you don't normally bring a frying pan (I'm a one-pot backpacker), this migt be your best and most versatile solution.