Crayfish are increasingly farmed for food globally, and their welfare status raises questions about crustacean sentience, handling stress, and humane killing methods.
Crayfish welfare is an active frontier in animal ethics as scientific evidence for crustacean sentience accumulates and legislation adapts. The UK decision to recognize decapods including crayfish as sentient under welfare law represents a significant policy development with international implications. For farmed crayfish, key welfare considerations include crowding stress, water quality management, and killing methods at harvest. The precautionary principle supports moving toward more humane killing methods even where legislative requirements are not yet in place. Consumer awareness of crustacean sentience research is driving some retailers to update their crayfish sourcing standards.