This import risk assessment (IRA) takes into account the risks associated with O. niloticus to Namibia's freshwater aquatic fishes and the environment associated with the importation, as part of regulations made in terms of the Aquaculture Act 18 of 2002 section 43 (Regulations relating to Import and Export of Aquatic Organisms and Aquaculture Products). Given the importance of farmed and wild-caught O. niloticus, especially as a source of protein, O. niloticus represents a potential source to food security in the developing world. The present report presents the risk assessment for the importation of O. niloticus into Namibia for aquaculture experimental purpose at Leonardville Fish Farm (LFF), in the Omaheke Region. The risk assessment is based on a rapid risk inventory. The assessment of available evidence, data and information and risk estimations of the species have been performed by Matheus- Auwa Ameya using the (Technical guidelines on rapid risk assessment for animal health threats protocols; the OIE - Guidelines for assessing the risk of non-native animals becoming invasive, and the Guidance for interpretation of CBD categories on introduction pathway (OIE, 2011; FAO, 2021; IUCN. 2017; Harrower et al., 2018).