Advanced welfare science for tilapia in aquaculture, covering stocking density impacts, water quality requirements, pain responses, and best practice management for this widely farmed fish.
Tilapia welfare science has advanced significantly in recent years, with research confirming that these fish have complex behavioral needs and neurological capacity for pain. Despite being often considered lower-welfare animals due to their hardiness, tilapia suffer significantly under poor aquaculture conditions. Chronic crowding stress suppresses immune function, increases aggression, and causes ongoing negative affective states. Water quality parameters — oxygen, temperature, ammonia, pH — require careful management for welfare as well as production goals. The widespread use of hormones to produce all-male populations raises underexplored welfare questions. Best practice tilapia aquaculture increasingly aligns production efficiency with individual fish welfare.