Infectious diseases in farmed shrimp cause mass mortality and immense suffering. Improving biosecurity and reducing antibiotic overuse are key welfare and environmental priorities.
Disease outbreaks in shrimp farms cause mass mortality — billions of animals dying from infection, oxygen depletion, or emergency pond draining. Whether shrimp experience something analogous to suffering remains debated, but the precautionary principle and the scale of deaths make welfare improvement urgent. Evidence suggests shrimp can respond to noxious stimuli in ways consistent with nociception. Overcrowded, poor-quality pond environments stress immune systems and accelerate pathogen transmission. Best-practice biosecurity — including pathogen-free postlarvae, filtered water intake, and reduced stocking densities — can prevent outbreaks without antibiotic dependence. Certification schemes that mandate such practices represent meaningful welfare progress.