Land-use activities occurring in the upper catchment of the Olifants River System affect the water quality of Loskop Dam. Such activities lead to water pollution and that affect the health of fish and other aquatic organisms. The aim of the study was to determine the health status of Loskop Dam by assessing the health and parasites of Oreochromis mossambicus and Labeo rosae as biological indicators. The selected fish species were examined during summer (March) and winter (June) 2018...