Despite strong scientific evidence for fish pain and sentience, the policy and regulatory response has lagged significantly, creating an implementation gap that results in preventable suffering.
The gap between fish pain science and fish welfare policy is one of the clearest examples of evidence lagging behind regulation in animal welfare. The science strongly supports fish sentience and the capacity for pain - yet fish are routinely killed using methods that would be illegal for land animals. Closing this gap requires parallel effort on multiple fronts: regulatory advocacy to extend stunning requirements to farmed fish, industry engagement to demonstrate the feasibility of humane slaughter, consumer education to create demand for welfare-certified fish, and continued research to develop and validate species-specific welfare indicators. Progress is being made - several major supermarkets have committed to sourcing salmon from operations using controlled atmosphere killing - but the scale of change needed is substantial.