The slaughter of farmed fish without prior stunning causes prolonged consciousness and suffering in animals with demonstrated capacity for pain, making humane slaughter standards a critical welfare priority.
The scale of welfare harm from unstunned fish slaughter is almost incomprehensible — billions of individual animals experiencing minutes of distress during killing in conditions that would be clearly illegal for mammals. The scientific case for fish sentience is now strong enough that the lack of mandatory stunning requirements in most jurisdictions represents a significant regulatory failure driven by economic rather than welfare considerations. Consumer demand for certified humane fish products, combined with advocacy for regulatory reform, represents the most direct path to improving welfare outcomes for the largest number of individuals in animal agriculture.