Shrimp and prawn aquaculture produce over 5 million tonnes annually, largely in Asia. Welfare conditions in shrimp farms are poorly regulated and often severe, with significant uncertainty about shrimp sentience adding complexity.
Shrimp welfare occupies a genuine frontier of moral uncertainty. The evidence for shrimp sentience is suggestive but not conclusive: they show nociceptive responses, avoid noxious stimuli, and demonstrate apparent pain behavior, but their neurological organization differs substantially from vertebrates. Given the scale of shrimp aquaculture — billions of animals — the precautionary principle argues for welfare consideration even under uncertainty. Eyestalk ablation — standard hatchery practice — involves tissue damage to sensitive structures and would be considered clearly harmful if performed on animals with recognized sentience. Stocking densities that cause chronic crowding stress, inadequate water quality management, and routine practices involving handling and confinement all warrant examination. The emerging shrimp welfare research field is beginning to provide the evidence base needed for evidence-based standards.