Despite growing consumer interest in fish welfare, significant gaps remain between welfare science knowledge and the requirements of current aquaculture certification schemes.
Certification gap analysis reveals that the fish welfare certification landscape, while improving, still falls well short of providing the assurance consumers expect. The distinction between environmental certification and welfare certification is often lost in marketing, leading to green-washing of welfare claims. Genuine fish welfare certification requires species-specific welfare criteria, mandatory stunning at slaughter for all relevant species, behavioral welfare monitoring, and stocking density limits based on welfare evidence rather than legacy production practice. Supporting certification bodies that are genuinely advancing fish welfare standards, rather than those offering minimum compliance pathways, is the most impactful consumer choice available.