Shrimp farming is one of the world's fastest-growing aquaculture sectors, yet stocking density — how many shrimp per unit area — has major welfare implications that are only beginning to be addressed.
Stocking density is one of the most significant welfare levers in shrimp aquaculture. Extremely high densities — driven by economic pressure to maximize production per unit — compromise water quality, increase aggressive interactions including antennae loss, and create conditions for rapid disease transmission including Early Mortality Syndrome (EMS). Shrimp have decentralized nervous systems, but evidence increasingly supports the capacity for pain-like experiences, making welfare considerations important. Optimal stocking densities that balance production efficiency with welfare remain an active area of research. The Shrimp Welfare Project and others are developing evidence-based welfare standards. Transitions to lower densities, improved water management, and regular welfare assessment during cultivation represent meaningful improvements.