I have a friend who is a long time butcher, 4th generation, for that matter. He smokes anything that can get ahold of. His thoughts on carp are that the dark meat needs to be removed. He had some, along with catfish, walleye, northern pike, as well as venison, beef, and sausage. ( I love fishing trips with these guys ) The main difference in the fish was texture to be honest, the flavor was dominated by the smoke and cure. All the fish was done together as it was freezer cleanout time.