Address ongoing declines in populations of Jullien's golden carp (Probarbus jullieni) and thick-lipped barb (Probarbus labeamajor) in the Mekong River of northern Lao PDR through the establishment and management of co-managed Fish Conservation Zones (FCZs) at three sites of spawning habitat for these species, between Luang Prabang and Vientiane. This work builds on past work funded by CEPF, and will be implemented in partnership with the National University of Laos.