Crab farming is expanding in Asia and elsewhere. Following recognition of decapod crustacean sentience, welfare standards for farmed crabs are an emerging regulatory and ethical challenge.
Farmed crab welfare follows the pattern of other decapod crustaceans in receiving belated attention following legislative recognition of their sentience capacity. Mud crabs held live for luxury seafood markets experience prolonged confinement in cramped, low-quality conditions before sale. Traditional killing methods including freshwater drowning, chilling, or live cooking are potentially painful given current sentience evidence. The scale of live crab trade in Asian seafood markets means welfare impacts affect enormous numbers of individual animals. Developing practical, scalable stunning methods for crabs before killing is a research and regulatory priority.