Shrimp hatcheries are the starting point of the aquaculture production chain. Welfare conditions in hatcheries affect billions of individual animals and set the trajectory for the entire production cycle.
Shrimp hatchery welfare operates at extraordinary scale — billions of individual animals pass through hatchery conditions annually. The welfare status of larval shrimp is scientifically contested, with less evidence for pain capacity in early larval stages than in post-larval and juvenile stages. However, the precautionary principle and the sentience recognition trajectory for decapod crustaceans suggests welfare consideration is warranted even for early life stages. Eyestalk ablation in broodstock females — the standard method for inducing maturation in whiteleg shrimp — involves removing one eye, causing tissue damage and pain in a species recognized as sentient in some jurisdictions. Research into alternative maturation induction methods is underway. Disease prevention through biosecurity, water quality management, and probiotic supplementation reduces mass mortality events that may involve significant welfare harm. The Shrimp Welfare Project's hatchery welfare standards provide a framework for improvement.