Tilapia (genus)

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Tilapia
Zebra tilapia, Tilapia buttikoferi
Zebra tilapia, Tilapia buttikoferi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Cichlidae
Subfamily: Pseudocrenilabrinae
Tribe: Tilapiini
Genus: Tilapia
Smith, 1840
Species

About 40, but see text.

Tilapia is a large genus of cichlid fishes endemic to Africa. The common name "tilapia" is also used for tilapiine cichlids of the genera Oreochromis and Sarotherodon, which were long contained in Tilapia.

There is strong indication that even the remaining Tilapia do not constitute a monophyletic group, but rather an assemblage basal among tilapiines and possibly even paraphyletic with non-tilapiine cichlids. For example, Tilapia bemini seems to be closer to Astatoreochromis, and a group containing Tilapia rendalli, Tilapia ruweti and Tilapia zillii is probably even more distant, based on mtDNA sequence analysis. Research is hampered by the fact that hybridization runs rampant in these fishes, and that judging from mtDNA alone taxa may appear to be closer to others than they actually are.(Nagl et al. 2001)

Given the fast speed of evolution in the tilapiines, nuclear DNA sequences probably would provide insufficient resolution to robustly resolve these fishes' phylogeny; more research is clearly necessary.

Wikimedia Commons has media related to:
  • "Tilapia". FishBase. Ed. Ranier Froese and Daniel Pauly. October 2006 version. N.p.: FishBase, 2006.
  • Nagl, Sandra; Tichy, Herbert; Mayer, Werner E.; Samonte, Irene E.; McAndrew, Brendan J. & Klein, Jan (2001): Classification and Phylogenetic Relationships of African Tilapiine Fishes Inferred from Mitochondrial DNA Sequences. Molecular Phylogenetics and Evolution 20(3): 361–374. doi:10.1006/mpev.2001.0979
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