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Fishing safaris

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Before the introduction of Nile perch and Nile tilapia in the 1950s and 1960s, Lake Victoria had a multi-species fishery of over 500 endemic fish species, the dominant species being the tilapiine and haplochromines. Haplochromines were dominant in catches, but are a small bony fish, not always popular for consumption.
Before 1954, Lake Victoria's ecology was characterised by enormous biodiversity. It was inhabited by over 500 species of fish, 90% of which were cichlids belonging to the genus Haplochromis.They are thought to have evolved in Lake Victoria within the last 12,000 years.They are known for their extraordinary ability to evolve rapidly to suit extremely localised and diverse environments, a characteristic termed 'evolutionary plasticity'.This ability has made the cichlid species of Lake Victoria an extremely successful fish. Haplochromis species accounted for some 80% of the fish biomass of the lake, an abundance which led Graham to believe that this species flock could support a trawler fishery of up to 200 boats. It also meant that Lake Victoria at one time boasted one of the most diverse fish environments on earth. With such diversity, the cichlids of Lake Victoria managed to exploit virtually every food source available, including most detritus, zooplankton.
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