Are bigger than common carp. They are grey on the outside vs gold on the common. Buffalo meat is white and not oily vs common carp meat is mostly dark read and super oily. Night and day difference. Grass carp I’ve only caught on or two in my lifetime and tossed them back so I couldn’t tell you. They are all different. I’d like to get my hsbe a on soome Asian and big head carp. I believe their meat is similar to Buffalo.