Ctenochromis pectoralis Pfeffer, 1893

Genner, Martin J., Hsu, Ling-Lan, Collins, Rupert A., Smith, Alan M., Saxon, Andrew D., Shechonge, Asilatu H., Ngatunga, Benjamin P. & Turner, George F., 2022, Revision of the African cichlid fish genus Ctenochromis (Teleostei, Cichliformes), including a description of the new genus Shuja from Lake Tanganyika and the new species Ctenochromis scatebra from northern Tanzania, European Journal of Taxonomy 819, pp. 23-54 : 43-44

Ctenochromis pectoralis Pfeffer, 1893

Figs 6a–d , 7a–f , 8a–b

Tilapia pectoralis – Boulenger 1899: 130.

Haplochromis pectoralis – Regan 1922a: 685. — Jordan 1923: 219. — van Oijen et al. 1991: 161.

non Harpagochromis pectoralis – Kaufman 1996: 1.

Material examined

Lectotype TANZANIA • Korogwe ; 1888; F. Stuhlmann leg.; ZMH, ZMH402 .

Paralectotypes TANZANIA • 3 individuals; Korogwe; 1888; F. Stuhlmann leg.; ZMH403 1–3 • 1 individual; Korogwe ; 1888; F. Stuhlmann leg.; BMNH 1899.2.27.1 .

Additional material

TANZANIA – Ruvu River (between Lake Jipe and Nyumba ya Mungu Reservoir) • 3 specimens; 14 Aug. 2015; M. Genner, A. Shechonge, A. Smith and B.P. Ngatunga leg.; BMNH 2021.7.15.1 – BMNH 2021.7.15.3 .

Distribution

Pangani River system, specimens only known from the Korogwe, Nyumba ya Mungu Reservoir, and the Ruvu River (between Lake Jipe and Nyumba ya Mungu Reservoir).

Figures

Fig. 6. a. Ctenochomis pectoralis Pfeffer, 1893, lectotype ZMH402 from Korogwe (imaged by Thilo Weddehage). b. C. pectoralis, paralectotype BMNH 1899.2.27.1 from Korogwe. c. C. pectoralis, ♂ from Ruvu River shortly after capture (part of BMNH 2021.7.15.1-3). d. C. pectoralis, ♂ from Ruvu River preserved state (part of BMNH 2021.7.15.1-3). e. C. scatebra Genner, Ngatunga & Turner sp. nov., ♂ from Chemka Springs shortly after capture (part of BMNH 2021.7.15.1-3). f. C. scatebra sp. nov. holotype BMNH 2021.7.15.4. Scale bars: 10 mm.

Fig. 7. Morphologyof Ctenochromis Pfeffer, 1893.a, d, g. Oral teeth.b, e, h. Chest squamation illustrating scale-free patches. c, f, i. Cheek squamation illustrating the reduction in scale number towards the ventral section of the cheek. a–c. Ctenochomis pectoralis Pfeffer, 1893 from Korogwe (paralectotype BMNH 1899.2.27.1); d–f. C. pectoralis from the Ruvu River (part of BMNH 2021.7.15.1-3); g–i. C. scatebra Genner, Ngatunga & Turner sp. nov. from Chemka Springs (holotype BMNH 2021.7.15.4). Scale bars: 1 mm.

Fig. 8. Morphology of Ctenochromis Pfeffer, 1893, imaged using x-ray tomography micro CT. a. Ctenochomis pectoralis Pfeffer, 1893, paralectotype BMNH 1899.2.27.1 from Korogwe. b. C. pectoralis from the Ruvu River (part of BMNH 2021.7.15.1-3). c. C. scatebra Genner, Ngatunga & Turner sp. nov., holotype BMNH 2021.7.15.4. Scale bars: 10 mm.