Tilapia are among the most widely farmed fish globally, but welfare standards vary dramatically between operations, with significant opportunities for improvement.
The hardiness of tilapia has led to a tolerance of stocking densities and water quality conditions that compromise welfare significantly. Fish kept in crowded, poorly oxygenated conditions experience chronic stress detectable through behavioral and physiological indicators. Improving tilapia welfare requires adopting stocking density limits, maintaining appropriate water quality, reducing handling frequency, and implementing low-stress slaughter methods. Given the scale of tilapia production, even modest per-fish welfare improvements represent enormous aggregate benefit.