Giant Freshwater Prawn: Welfare in Tropical Aquaculture

Key Welfare Facts

Giant freshwater prawn is farmed extensively in Bangladesh, India, Thailand, and Vietnam for export markets.
They exhibit complex social behaviour with dominant males controlling territories and subordinating smaller individuals.
Size heterogeneity from social dominance creates welfare problems requiring frequent grading of pond populations.
Ammonia accumulation in pond culture causes gill damage and osmoregulatory stress in poorly managed systems.
Harvesting using cast nets causes physical injury and acute crowding stress before processing.
Welfare regulations for freshwater crustaceans are essentially absent despite significant production volumes.

Welfare Assessment

Giant freshwater prawn welfare is largely unaddressed by regulatory frameworks despite production of millions of individuals annually. Supporting development of welfare standards and precautionary welfare application during farming and harvest advances this underserved area.

What You Can Do

Support development of welfare guidelines for freshwater prawn aquaculture through certification bodies
Advocate for application of the precautionary principle to crustacean welfare in farming and slaughter
Choose prawn products from operations with documented welfare-conscious harvest and handling protocols
Support research into stress indicators and welfare assessment for Macrobrachium species