Oreochromis esculentus, the Singida tilapia or Graham's tilapia, is a species of cichlid endemic to the Lake Victoria basin, including some of its satellite lakes such as Kyoga, in Tanzania, Uganda, and Kenya.[1] Its common name refers to Lake Singida, but this population is the result of an introduction that happened in the 1950s.[2] This fish is highly valued by local fishermen, who know it as ngege.
In 1927-1928 Michael Graham conducted the first ever systematic Fisheries Survey of Lake Victoria. In his official report of the expedition, Graham wrote that "The ngege or satu Tilapia esculenta, is the most important food fish of the lake, whether for native or non-native consumption. No other fish equals it in the quality of the flesh. It is convenient size for trade, travels well and is found in much greater numbers than other important fish, such as semutundu (Luganda), Bagrus sp.''.[3] Furthermore, Graham noted that "The introduction of the European flax gill-net of 5 inch mesh has undoubtedly caused a diminution in the number of ngege in those parts of the Kavirondo Gulf, the northern shore of the lake, the Sesse Islands and Smith's Sound which are conveniently situated to markets".[3]
Oreochromis esculentus has been introduced into the Pangani River basin,[1] where it presents a threat to the native relative O. jipe.[4]
^ abcNatugonza, V. & Musinguzi, L. (2022). "Oreochromis esculentus". IUCN Red List of Threatened Species. 2022: e.T15457A47182096. doi:10.2305/IUCN.UK.2022-1.RLTS.T15457A47182096.en. Retrieved 3 August 2022.
^Genner, M.J.; G.F. Turner; B.P. Ngatunga (2018). "A Guide to Tilapia Fishes of Tanzania" (PDF). Retrieved 6 November 2019.
^ abGraham M. (1929.) The Victoria Nyanza and Its Fisheries: A Report on the Fish Survey of Lake Victoria 1927–1928 and Appendices. London: Crown Agents for the Colonies. 256pp.
^Bayona, J.D.R.; Hanssens, M. (2006). "Oreochromis jipe". IUCN Red List of Threatened Species. 2006: e.T60628A12388450. doi:10.2305/IUCN.UK.2006.RLTS.T60628A12388450.en.
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Oreochromisesculentus, the Singida tilapia or Graham's tilapia, is a species of cichlid endemic to the Lake Victoria basin, including some of its satellite...
two critically endangered tilapia, the Singida tilapia or ngege (Oreochromisesculentus) and Victoria tilapia (O. variabilis). In 1927–1928 Michael Graham...
stocking of exotic tilapia species, including Oreochromisesculentus, Oreochromis niloticus, Oreochromis leucostictus and Coptodon spp., all which have...
get fully established in the new ecosystem. The Singida Tilapia (Oreochromisesculentus) is locally known as "Ngege". It is a critically endangered species...
critically endangered tilapia species, the 'Ngege' or Singida tilapia (Oreochromisesculentus) and Victoria tilapia (O. variabilis). Other commonly observed species...
the muscle tissues of Clarias gariepinus (African catfish) and Oreochromisesculentus (Singida tilapia) in Lake Rukwa. In 2016, an estimated 1.53 billion...
fish community was very different and consisted mainly of 'Ngege' (Oreochromisesculentus) and Victoria tilapia (O. variabilis) as well as vast numbers of...
) (2013). "Oreochromis variabilis" in FishBase. April 2013 version. Froese, Rainer; Pauly, Daniel (eds.) (2017). "Oreochromisesculentus" in FishBase...
unknown Haplochromis species, Singida tilapia (Oreochromisesculentus) and Victoria tilapia (Oreochromis variabilis). Lake Kanyaboli is among hundreds...
back-flooding. The swamps harbour endangered fish species Oreochromisesculentus and Oreochromis variabilis that have disappeared from Lake Victoria itself...
part to over-fishing by the local people, there were no Oreochromisesculentus or Oreochromis variabilis in the lake. A 2005 report noted changes in Lake...
to Oreochromis and finally to their own genus. Nevertheless, the genus is very closely related to Oreochromis, and O. amphimelas and O. esculentus appear...
cyanellus Y Y Greenland shark Somniosus microcephalus Y Y Gray conger Conger esculentus Y Y Gray triggerfish Balistes capriscus Y Y Gulf bareye tilefish Caulolatilus...
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