The scientific debate about fish pain has evolved substantially. Current evidence supports that fish likely experience pain, with major welfare implications for fishing, aquaculture, and policy.
The fish pain debate has profound welfare implications given the enormous numbers of fish affected by fishing and aquaculture. Scientific consensus has shifted substantially toward recognizing fish as likely pain-capable animals, with the burden of proof now on those who deny fish sentience rather than those who assert it. This shift supports precautionary inclusion of fish in welfare frameworks. Key welfare interventions informed by this science include humane slaughter with effective stunning, minimizing handling time in sport fishing, and developing farming systems that reduce chronic stress. Policy is beginning to catch up with science in progressive jurisdictions.