Freshwater Prawn Welfare in Tropical Aquaculture

Freshwater giant prawns farmed across Asia represent a significant source of protein with underexamined welfare implications.

Key Facts

The giant freshwater prawn is farmed across Southeast Asia, South Asia, and parts of Africa
Global production exceeds 200,000 tonnes annually from both pond and cage systems
Prawns show escape responses and avoidance learning consistent with nociception
Harvest methods including ice exposure and air drying cause prolonged physiological stress
Certification schemes rarely include freshwater prawn in species covered

Welfare Considerations

Freshwater prawns, like marine shrimp, sit at the edge of current welfare understanding. Evidence for crustacean nociception and potential pain experience supports applying the precautionary principle to their management. Harvest methods involving gradual chilling or air exposure cause prolonged physiological stress. High-density pond systems reduce water quality and increase disease pressure. The scale of production means even modest welfare improvements could benefit hundreds of millions of animals. As with marine shrimp, the Shrimp Welfare Project and related organisations are working to develop species-appropriate welfare standards that can be applied commercially.

What You Can Do

Apply the same precautionary welfare criteria to freshwater prawn as to marine shrimp
Support organisations working on crustacean welfare standards across species
Choose products with welfare certification or explicit welfare policies
Reduce consumption of intensively farmed prawn from uncertified sources
Support research into rapid, humane slaughter methods for farmed crustaceans