Tilapia is one of the most important aquaculture species globally, with welfare concerns around stocking density, water quality, and handling requiring greater attention as production expands.
While tilapia are often presented as resilient fish requiring minimal welfare attention, they have genuine welfare needs that are frequently unmet in intensive production. High stocking densities cause chronic social stress and competition for resources. Poor water quality, while tolerated short-term, causes physiological stress when prolonged. Male tilapia show significant aggression, and high-density production amplifies conflict and injury. The welfare status of tilapia in aquaculture is understudied relative to their production importance - improving welfare monitoring and standards for this species would benefit billions of individual fish annually.