Brycinus epuluensis, a new species from the Epulu River (Congo basin), Africa (Teleostei: Alestidae)

Type Article
Date 2016-04
Language English
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Author(s) Deem Eva1, 2, Vreven Emmanuel1, 2, Sadio Oumar3, Snoeks Jos1, 2
Affiliation(s) 1 : Royal Museum Cent Africa, Sect Vertebrates, Ichthyol, Leuvensesteenweg 13, B-3080 Tervuren, Belgium.
2 : Katholieke Univ Leuven, Lab Biodivers & Evolutionary Genom, Charles Deberiotstr 32, B-3000 Leuven, Belgium.
3 : IRD, BP 1386 CP 18524, Dakar, Senegal.
Source Ichthyological Exploration Of Freshwaters (0936-9902) (Verlag Dr Friedrich Pfeil), 2016-04 , Vol. 27 , N. 1 , P. 49-60
WOS© Times Cited 4
Abstract Brycinus epuluensis, new species, is described from the Epulu River, an affluent of the Ituri River (Aruwimi basin, Middle Congo basin, DR Congo). It most closely resembles the widespread species B. imberi from the nurse group, although it has a broad black mid-lateral band on the body, which is absent in B. imberi. This black band is, however, also present in specimens from the neighbouring population in the Ituri River itself. Brycinus epuluensis differs from the types of B. imberi and its five junior synonyms, as well as from the neighbouring Ituri population, mainly in having only 6 instead of 8 premaxillary teeth, arranged in a single row. This low number of premaxillary teeth is characteristic for species of the longipinnis group. However, B. epuluensis differs from all members of the longipinnis group by the absence of a fronto-parietal fontanelle in adults and the following combination of characteristics: 18-22 lateral line scales and 12-15 branched anal-fin rays. The Ituri population could not be separated from B. imberi and most of its synonyms on morphometrics, but does differ by the presence of the black mid-lateral band.
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Deem Eva, Vreven Emmanuel, Sadio Oumar, Snoeks Jos (2016). Brycinus epuluensis, a new species from the Epulu River (Congo basin), Africa (Teleostei: Alestidae). Ichthyological Exploration Of Freshwaters, 27(1), 49-60. Open Access version :