Global shrimp aquaculture produces over 4 million tonnes annually under conditions that raise significant welfare concerns, yet shrimp sentience remains scientifically uncertain and largely unaddressed by welfare standards.
Shrimp welfare is an emerging field where the gap between scientific evidence and welfare standards is particularly stark. Evidence now supports that decapod crustaceans experience nociception and likely some form of pain — they show avoidance learning, protective responses to noxious stimuli, and trade-off decisions that suggest subjective aversion to harmful stimuli. Eyestalk ablation — performed on millions of female broodstock shrimp globally to induce reproduction — involves cutting or crushing the eyestalk without anaesthesia, causing acute and potentially chronic pain. Intensive pond culture creates chronic stress through crowding, poor water quality, oxygen fluctuation and disease pressure. At slaughter, shrimp are typically killed by immersion in ice water, boiling alive, or freezing — none of which are validated as causing rapid insensibility. The absence of any meaningful welfare regulation for shrimp means producers face no commercial pressure to improve conditions even as sentience evidence accumulates.