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Fish species richness and peculiarities of seven lakes from different zones of the country were analyzed. A total of ninety species from twenty-five families were reported for these lakes. Asejire had the highest number of species (41) while the lowest was recorded from Opi (13). Oguta had highest number of families (17) and lowest being Tiga (8). Similarities and peculiarities of fish fauna of these lakes showed that Tilapia zillii was common to all the lakes. Asejire had the highest restricted species (6) and Tiga with the lowest species (2). The family Polypteridae is restricted to Dadin Kowa, Osteoglossidae and Palaemonidae to Oyan while Notopteridae to Oguta lake. Diversity index was highest in Oguta (0.5) and lowest in Opi (0.1) which was not significantly different (p>0.05). Size of water body, physiochemical parameters and geographical location amongst other factors influenced species richness and peculiarities of these lakes.
