Existing aquaculture certification schemes have significant welfare gaps that undermine their credibility as genuine indicators of fish welfare standards.
Aquaculture welfare certification is a landscape of genuine gaps and misleading signals. The dominant certification schemes — ASC, GlobalG.A.P., Friend of the Sea — are primarily environmental sustainability tools that have added welfare provisions without making them central or rigorous. Pre-slaughter stunning requirements are absent from most major schemes despite being the highest welfare-impact single intervention available. Species-specific welfare standards are minimal or absent for the majority of farmed species. Consumer-facing sustainability labels are widely interpreted as welfare assurances when they do not provide them. The welfare case for substantive reform of aquaculture certification — including mandatory pre-slaughter stunning, species-specific stocking density standards, and regular unannounced welfare audits — is well established by welfare science. What remains is the regulatory and commercial pressure to implement it.