Population trend
Trend
A recent survey in 2015 (Chakona et al. in prep) identified three remnant subpopulations of this species (the Krom Antonies, the upper Kruismans and the lower Verlorenvlei Rivers). While this species was found in three small isolated pools in the mainstem Kruismans River during this survey, these pools are unlikely to have persisted throughout the dry season. Historically, the Verlorenvlei River System would have receded into a series of isolated pools sustained by ground flow, but excessive water abstraction in this extremely dry catchment is affecting long term persistence of these refugial pools. Much of the river was found to be completely dry during the 2015 survey (Chakona et al. in prep). Given that the upper Kruismans River remnant subpopulation occurs in a very short stretch of river (possibly less than 500 m long), and that the riparian zone is heavily infested by the non-native Populus tree vegetation, while the lower Verlorenvlei River has both been heavily invaded by non-native fishes and impacted by pollution from the adjacent town of Redelinghuys, these remnant subpopulations are considered to be at high risk and may not be viable in the long-term. The Krom Antonies River subpopulation is the only remaining stronghold for this species.