Freshwater crayfish are farmed and consumed at significant scale globally, with welfare considerations including pain capacity, slaughter methods, and the welfare implications of live transport and retail.
Crayfish welfare sits at the same frontier as shrimp welfare — the growing evidence of crustacean pain capacity is advancing faster than regulatory and industry responses. The Swiss decision to require stunning before boiling represented a significant acknowledgment that crustacean suffering matters. Boiling alive without prior stunning causes a period of apparent distress before death; the neurological debate about whether this constitutes suffering in a morally significant sense has not been fully resolved, but the precautionary principle — given the scale of consumption — favours humane slaughter. Live retail conditions, including low oxygen and crowding, cause additional welfare concerns before any slaughter method is applied.