The Southern Africa Regional Environmental Program (SAREP) has a strategic goal to improve the conservation and sustainable use of biological resources of the Cubango-Okavango River Basin. This report fulfils one of the initial steps in helping to mitigate a critical threat to biodiversity within the system, i.e.; Poor Knowledge of the Status, Extent and Factors Regulating Biodiversity within the Basin (Indirect Threat) (SAREP, 2012), providing information on some of the aquatic faunal diversity of the Cubango-Okavango basin within Angola. This report provides an initial summary of the key findings from the aquatic biodiversity survey of the Angolan portion of the Cubango-Okavango River Basin. The findings presented within the report are provisional, interim results, which need to be validated with post-survey laboratory analysis. The post-survey analysis is on-going, with finalised results to be published in early August 2012. The aquatic biodiversity survey formed the first of a series of planned surveys cataloging and improving the inventory of species that occur within the Cubango-Okavango basin. The survey was a collaborative venture between SAREP and the Angolan Ministry of Environment's (MINAMB) Institute of Biodiversity and the Angolan Ministry of Agricultures National Institute of Fish Research (INIP) The survey was organized by Dr Chris Brooks, SAREP's natural resource specialists and Dr Paula Coelho, the Director of MINAMB's Biodiversity Directorate.