Photo credit: MK19 – Fisheries and Aquaculture Production in Reservoirs in Lao PDR Technical review: Abdel Rahman El Gamal (Founder of the website) Nam Xong Sub-River Basin (NXSRB) is one of the 18 sub- basins of Nam Ngum River Basin, Laos. NXSRB covers an area of around 180,000 ha and located in the central part of northern Lao …