The use of alien species is a proven means to increase production and value from aquatic ecosystems. However, alien species are now recognised as one of the most significant threats to aquatic biodiversity. There are a range of international mechanisms that have been established to assist countries in meeting international obligations and responsibilities. Implementation is often difficult due to lack of awareness and problems with enforcement. Regional coordination of policies is needed for effective national management.

This document provides an analysis of the environmental impacts and risks associated with aquaculture development in Viet Nam and guidance on better environmental management and monitoring for its future development. Part 1 provides a summary of the main findings, and guidelines for future development of the aquaculture sector. Part 2 provides the detailed case study findings. The guidelines presented in Part 1 are based on cases studies of all major aquaculture commodities in Viet Nam.

This report is the outcome of a study conducted by NACA to assess the impact of the 2004 Indian Ocean tsunami and of the introduction of US anti-dumping duties on the shrimp farming sectors of countries in the Asia-Pacific region, with special focus on the effect that these unusual events had on shrimp prices and stakeholders' livelihoods. The assessment was conducted by collecting data from a wide range of stakeholders involved with shrimp farming.

This report, the 34th in the series, contains information about the aquatic animal health status of fourteen states in the Asia-Pacific region. The foreword discusses efforts towards international harmonisation in aquatic animal health standards.

Two in-country projects, in India and Vietnam, have provided good examples of translating the International Principles on Responsible Shrimp Farming into specific better management practices (BMPs) adapted to local farming conditions and ensuring their implementation by relevant stakeholders. The results range from improved yields, less impact on the environment, wholesome products, and better relations among players in the market chain. In short, the implementation of the BMPs has provided benefits to the farmers, environment and society.