This report summarises the proceedings of the 22nd meeting of the Regional Advisory Group on Aquatic Animal Health, held 6-7 November 2023. 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.
• Farm-level aquaculture biosecurity: From a tilapia parasites perspectives.
• Farm level aquaculture biosecurity: Update on Operation Black Tiger Shrimp Revival.
• Update on WOAH Asia-Pacific Network on Aquatic Animal Health.
• Update on regional disease reporting and disease list.
• Other matters.

Members of the Advisory Group include invited aquatic animal disease experts in the region, representatives of the World Animal Health Organisation and the Food and Agricultural Organization of the United Nations, collaborating regional organisations such as SEAFDEC Aquaculture Department and WOAH-Regional Representation in Asia and the Pacific, Thailand Department of Fisheries Aquatic Animal Health Research and Development Division, and the private sector.