This report, the twentieth in the series, contains information about the aquatic animal health status of nineteen states in the Asia-Pacific region. The editorial discusses health risks associated with trans-boundary movement of live aquatic animals and the role of risk analyses.

In this issue:

Peri-urban aquaculture in Kolkata. Diffusion and adoption of shrimp farming technologies. Aquaculture education in India. Information system on fish germplasm resources in China. Freshwater crustacean aquaculture in China. The role of macronutrients. Innovations by Bengal farmers. Scientific guidelines for freshwater prawn farmers in India. Status of mariculture in Indonesia. Use of probiotics in larval rearing. Problems in shrimp culture during the wet season.

This report, the nineteenth in the series, contains information about the aquatic animal health status of sixteen states in the Asia-Pacific region. The editorial discusses the role of the Quarterly Aquatic Animal Disease Reporting System.

In this issue:

Fertilisation, soil and water quality management. Commercialisation of giant freshwater prawn culture in India. Aquaculture in reservoir-fed canal systems. Production of black-lip pearl oyster Pinctada margaritifera. Hybridisation hassles. Breeding sea cucumber Holothuria scabra in Vietnam. Use of palm kernel meal in feeds. Getting the most out of your feed. Marine finfish aquaculture in Myanmar. Penaeus monodon culture in low-salinity areas. Fisheries and aquaculture in Nepal.

In this issue:

14th NACA Governing Council, Myanmar. Welcome to NACA's first Associate Member. NACA Alumni notes - U Minn Thame. Australian Youth Ambassador. Assisting in the Development of Recirculating Shrimp Farm Technologies. Nepal to join STREAM Initiative. NACA Joins Thai IT for Agriculture Forum. Indigenous Australian aquaculture group visits Thailand. Bangladesh Fisheries Training and Extension Project tour. Ugandan farmers train on catfish breeding and culture.