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Parasites of the tigerfish  (Hydrocynus vittatus ) were investigated in the period October 2014 to July 2015 in the Sanyati Basin, Lake Kariba. The fish were collected using seine netting and also during the annual Kariba International Tiger Fishing Tournament. A total of 80 fish specimens (24 males and 56 females) were collected and were infected with the following seven parasite taxa: Monogenea  (Annulotrema  sp.1 from the gills and  Annulotrema  sp.2 from the skin), Nematoda  (Contracaecum  larvae), Cestoda (bothriocephalid, larval cyclophyllid), Copepoda  (Lamproglena hemprichii ), pentastomid, Myxosporea  (Myxobolus  sp.,) and unicellular ciliate parasites  (Trichodina  sp.,  Tetrahymena  sp., and unidentified).  Annulotrema  sp. 1 was observed in all fish and had the highest prevalence, mean intensity and abundance. The fish organs infected were gills, skin, fin, body cavity, stomach, intestines, mesentery, liver, kidney, brain cavity and swim bladder. No parasites were observed in the muscle, eyes and blood. The distribution of the parasites was highest in the gills and lowest in the brain cavity and swimbladder. Bothriocephalids, pentastomes and  Trichodina  sp. were not observed in male fish. Sex was not related to the intensity of parasites. The results of the study showed that  H. vittatus  has a richer parasite community than other previous investigated alestids. Pentastomes,  Myxobolus  sp.,  Trichodina  sp.,  Tetrahymena  sp. and bothriocephalid cestodes are new records for  H. vittatus  in Zimbabwe.

Taxonomy, distribution and prevalence of parasites of tigerfish, Hydrocynus vittatus (Castelnau, 1861) in the Sanyati basin, Lake Kariba, Zimbabwe