If I shoot just one or two fish, I'll leave em for the critters to feast on. Sometimes I'll keep some gar and clean em. The meat on gar is really good.
I like to keep carp, but not to eat. I'll use carp to bait my trotlines, limblines, juglines and crawdad traps. I will keep buffalo, though. Buffalo meat is excellent.
If I shoot a pretty good haul of fish, I'll keep what I want, and the rest goes to a buddy of mine who traps feral hogs and keeps em. Hogs know the sound of my truck rolling up now!