Shrimp aquaculture is one of the world's fastest-growing food production sectors. Stocking density is a critical welfare variable, with high densities linked to increased stress, disease, and mortality in species whose capacity for suffering is increasingly recognised.
The welfare status of shrimp is uncertain but increasingly taken seriously by researchers following evidence of nociception and stress responses. Whether shrimp experience subjective suffering remains debated, but given the enormous scale of shrimp farming — hundreds of billions of individuals annually — precautionary welfare standards are warranted. High stocking densities cause demonstrable physiological stress and disease even if the subjective experience is unclear. Reducing stocking densities, improving water quality management, and developing humane pre-slaughter stunning methods are practical improvements that reduce potential suffering at meaningful scale. Consumer choices for certified lower-density products can drive industry improvement.