Fish population dynamic in the newly impounded Nam Theun 2 Reservoir (Lao PDR) Maud Cottet, Stéphane Descloux, Pierre Guédant, Philippe Cerdan and Régis Vigouroux Hydroécol. Appl., 19 (2016) 321-355 Published online: 07 September 2015 DOI: 10.1051/hydro/2015004