We have a lot of carp in our river here. I guess some people eat them but they are mostly considered a trash fish and not very good table fare. These fish in our river can grow to 4 foot long or larger. Many years ago when I was a young man, I caught a mess of carp and decided to bury them in my garden as fertilizer. The following year I had a wonderful vegetable crop and added NO extra fertilizer at all. If you have a bunch of trash fish in your area, you may want to give this a try. I just left the fish whole and put them about a foot under the soil.
Rich from PA