The gills of six species of cichlid present in Lake Kariba (Zimbabwe) revealed the presence of twelve species of Cichlidogyrus, five being new species.

During a survey of fish ectoparasites in Lake Kariba (Zimbabwe), two crustaceans were often encountered . Dolops ranarum (Branchiura), parasite of the body, mouth and gill chamber, infected mostly cichlids, the catfish Clarias gariepinus, Synodontis zambezensis and two Mormyrids . Among cichlids clear host preferences were shown . No seasonal variations could be detected in the infections . D . ranarum parasitized predominantly fish above 15 cm in standard length . Lamproglena monodi (Copepoda) parasitized only the gills of cichlids with a preference for Serranochromis codringtonii, S . macrocephalus and Tilapia rendalli . Small fish were seldom infected . Seasonal variations of the prevalence occurred, the hot season being the less favourable . Few other crustaceans were found during the survey : a single specimen of Lamproglena hemprichii on the gills of the tigerfish, Hydrocynus vittatus ; three specimens of Afrolernaea longicollis, one found on the gills of Hippopotamyrus discorhynchus and two on the gills of Mormyrops deliciosus ; a hundred of Ergasilus mirabilis in a specimen of H. discorhynchus .