This report summarises the proceedings of the 24th meeting of the Regional Advisory Group on Aquatic Animal Health, held 24-25 November 2026 by video conference. The role of the group is to review trends in disease and emerging threats in the region, identify developments in global disease issues and standards, to evaluate the Quarterly Aquatic Animal Disease Reporting Program and to provide guidance on regional strategies to improve aquatic animal health management. The meeting discussed:

• Progress on NACA’s Asia Regional Aquatic Animal Health Programme.
• Updates from the WOAH Aquatic Animal Health Standards Commission.
• Updates from the SEAFDEC Aquaculture Department.
• Aquaculture Biosecurity:
  • The hidden highways of death: Critical biosecurity insights for shrimp production.
• Use of environmental DNA (eDNA).
  • Advancing the biosurveillance of emerging aquatic pathogens in Singapore with eDNA.
  • eDNA for disease detection and to support surveillance program of crayfish plague.
• Updates on Regional Disease Reporting and Disease List.
  • Regional aquatic animal disease reporting.
  • Proposal for new regional aquatic animal disease reporting system.
  • Transclucent post-larva disease (TPD): Disease card and endorsement for listing in the regional aquatic animal disease reporting system.
• Other matters.

Members of the Advisory Group include invited aquatic animal disease experts in the region, representatives of the World Organisation for Animal Health (WOAH) and the Food and Agricultural Organization of the United Nations (FAO), collaborating regional organisations such as SEAFDEC Aquaculture Department (SEAFDEC AQD) and WOAH-Regional Representation in Asia and the Pacific (WOAH-RRAP), and the private sector.