Aqua-cultured fish is one of the dominant export products in Vietnam. Total aquaculture production in Vietnam covered one million tonnes in 2003 and allegedly will reach over two million tonnes by 2010 (Ministry of Fisheries- MOFI, 2003). The total aquaculture production has increased already to 2.2 million tonnes in the 2009 (MOFI, 2009). The development of this sector is a major source of foreign currency and employment Vietnam has a coastline of more than 3,200 km long with over 3000 islands, a wealth of natural inland water bodies (lakes and rivers) and seasonal flooded grounds. Since 2000, the fisheries sector is an important contributor to the economy of Vietnam and fisheries are identified as a key economic growth sector by the Vietnamese Government (MOFI, 2006). The total area of water-surface is approximately 1.7 million hectares (MOFI, 2006). The Vietnamese government expects a further increase of the aquaculture sector of more than 25% in 2010.