Common carp is the most farmed fish globally by volume, with welfare practices in Eastern European pond systems varying significantly from intensive to extensive.
Carp welfare presents unique cultural challenges - particularly around Christmas traditions in Central and Eastern Europe where live carp are sold and home-slaughtered. Evidence shows carp have nociception and can experience distress; prolonged asphyxiation or crude stunning methods cause unnecessary suffering. Aquaculture certification schemes are beginning to include carp with standards on handling and slaughter. Cultural traditions around live carp sale and home slaughter represent a significant welfare education challenge requiring sensitive engagement.