I don't eat carp but i catch plenty when catfishing and i'd rather not let them go into the water since they are a nuisance/trash fish. So what can be done with them legally? thanks
There is a saying that goes, “one man’s trash is another man’s treasure.” For example, you might find sucker undesirable because you can’t eat them, but they have a valuable place in the food chain--sucker help clean algae from the stream bottom or they feed fish-eating birds like osprey. Carp consume vegetation and are often a tool used in golf course ponds to reduce aquatic plants.
To the heart of your question. If you catch a nongame fish and don’t want to keep it, you have a couple of options. You can release it alive; you can kill it and puncture the air bladder, so it doesn’t float, and put it back into the water; or you can take it home and dispose of it in your trash or use it for fertilizer in your garden. If you dispose of it on the bank, you could be cited for littering