Fish slaughter methods vary enormously in their welfare implications, and improving the humaneness of fish killing represents one of the highest-impact opportunities in food system welfare reform.
Fish slaughter welfare represents the largest-scale opportunity for reducing animal suffering in the global food system. The sheer number of individuals involved means that even small percentage improvements in method humaneness translate to welfare benefits for billions of animals. Most fish are currently killed through methods that cause prolonged distress and death over minutes to hours. Effective stunning before slaughter, followed by prompt killing, can dramatically reduce the suffering of individual fish. The barriers to improvement are primarily economic and cultural rather than technical — effective, scalable welfare-positive slaughter methods exist for major farmed species. Consumer pressure and regulatory standards are the key drivers of change.