Tilapia is one of the world's most farmed fish species, with production dominated by intensive systems in China, Egypt, and Indonesia that offer minimal welfare consideration.
Although tilapia are stress-tolerant compared to other farmed fish, high stocking densities in commercial systems still cause measurable chronic stress, immune suppression, and increased disease susceptibility. Male monosex production through hormonal sex reversal raises concerns about interference with normal development, though welfare consequences are not well characterized. Pond-based production in tropical countries often has minimal veterinary oversight. Slaughter methods vary from percussion stunning to ice slurry to live transport over long distances. Welfare science for tilapia lags significantly behind commercial production growth.