Tilapia is one of the world's most farmed fish species. Welfare improvements in tilapia production can benefit billions of individual animals each year.
Tilapia welfare has historically received little attention compared to salmon and other premium aquaculture species, yet the numbers involved are immense. Key welfare challenges include stocking densities that cause chronic crowding stress, poor water quality management, aggressive interactions in unbalanced sex-ratio groups, and inhumane slaughter. Evidence suggests tilapia are sentient — they show pain responses, stress physiology, and behavioural indicators of negative states. Improving welfare across this high-volume industry requires better water quality standards, reduced stocking densities, enriched tank environments where feasible, and mandated humane slaughter. Consumer and retailer pressure can drive adoption of welfare standards in this under-regulated sector.