Tilapia is one of the most widely farmed fish globally and faces specific welfare challenges in intensive production including crowding stress, water quality degradation, and handling practices in markets that sell fish live.
Tilapia welfare is relatively understudied compared to salmon and trout despite representing a larger share of global aquaculture production. The species hardiness that makes tilapia economically attractive does not mean welfare is irrelevant — it means welfare problems may be less immediately visible in mortality and production data. Live market holding conditions are a particular concern: tilapia held in minimal water at live fish markets for extended periods experience hypoxia stress that would cause significant welfare harm if fish sentience is accepted. The global distribution of tilapia production across many lower-income country contexts means welfare standards are unevenly applied and monitored.