Giant River Prawn Welfare and Humane Slaughter Methods

Macrobrachium rosenbergii is a large freshwater prawn farmed extensively in Asia, where welfare during harvest, transport, and slaughter is poorly regulated and highly variable.

Key Facts

Giant river prawns are the largest freshwater prawns farmed commercially, reaching 30cm
They are produced primarily in Bangladesh, India, Thailand, and China
Evidence supports decapod crustacean sentience including stress responses and avoidance learning
Live transport and sale without stunning is standard practice in Asian wet markets
Boiling alive is the most common slaughter method, causing prolonged suffering

Welfare Considerations

Giant river prawns demonstrate behavioural and physiological responses consistent with pain perception and stress. Live boiling causes suffering for up to several minutes before death. Live air transport and holding without water causes physiological stress and physical damage. Scientific consensus on decapod crustacean sentience has strengthened considerably, with several countries including the UK and Switzerland now extending animal welfare protections to crustaceans. Adoption of rapid chilling or electrical stunning before boiling would significantly reduce welfare harm in this major aquaculture species.

What You Can Do

Advocate for inclusion of Macrobrachium rosenbergii in national animal welfare legislation
Support research into effective and commercially viable humane slaughter methods for large freshwater prawns
Choose prawn products from suppliers with transparent and welfare-conscious supply chains
Raise consumer awareness of prawn sentience and the welfare case for humane slaughter
Engage with Asian aquaculture certification bodies to develop crustacean welfare standards