Classified as Lower Risk / Conservation Dependent (LR/cd) on the IUCN Red List 2007. Subspecies: Kobus ellipsiprymnus ellipsiprymnus (ellipsen or common waterbuck) and Kobus ellipsiprymnus defassa (Defassa waterbuck) are both classified as Lower Risk / Conservation Dependent (LR/cd) on the IUCN Red List 2007 (1).