 which other species do, and the exotic species thus has a fitness advantage over endemic organisms.One such example is the destruction of the endemic cichlid population in Lake Victoria via the introduction of the predatory Nile perch ("Lates niloticus").Although the exact time is unknown, in the 1950s the Ugandan Game and Fisheries Department covertly introduced the Nile perch into Lake Victoria, possibly to improve sport fishing and boost the fishery.