Tilapia is one of the most widely farmed fish globally, but welfare standards are almost entirely absent despite strong evidence that tilapia are sentient and experience stress.
Tilapia welfare receives almost no attention despite the species being one of the most numerically important farmed animals globally. Their social complexity — in natural conditions they establish territories and display elaborate social behaviors — is entirely suppressed in the high-density farming systems that dominate production. The crowding stress measurable through cortisol indicators and disease susceptibility demonstrates welfare compromise at scale. Consumer demand for cheap tilapia drives conditions that would not be acceptable for any terrestrial farmed species.