Carp are the most widely farmed fish in the world and are also central to recreational angling culture. Both contexts raise important welfare questions.
Farmed carp welfare is challenged by extremely high stocking densities in semi-intensive pond systems, particularly in Asia. Though carp tolerate crowding better than salmon, chronic crowding still causes stress and immune suppression. Harvest methods including pond draining and live transport cause acute welfare problems. In recreational angling, hook injuries and handling stress are genuine welfare concerns -- mouth damage from poorly handled fish, and exhaustion from prolonged fights affect recovery. Best practice catch-and-release techniques including barbless hooks, wet hands, minimal air exposure, and brief handling significantly reduce harm.