Stunning fish before slaughter has become increasingly standard in salmonid aquaculture. Understanding different methods and their effectiveness helps advocates push for better practices industry-wide.
Fish stunning represents one of the most direct and achievable welfare improvements in aquaculture. Unlike complex housing system reforms, stunning before slaughter is a discrete intervention that eliminates or dramatically reduces the duration of conscious suffering at the point of death. For salmon and trout, automated percussive and electrical stunning systems are commercially available and increasingly required by major retailers. The challenge is extending these standards to the broader range of farmed fish species and to wild capture fisheries. Research into effective stunning methods for diverse species is actively ongoing. Each advance represents potentially millions of animals experiencing a more humane death. Consumer and regulatory pressure to adopt universal stunning standards across aquaculture is the most effective lever for accelerating uptake.