Auchenoglanis

Auchenoglanis is a genus of relatively large, up to 70 cm (2.3 ft) SL, claroteid catfishes native to various freshwater habitats in Africa.[1]

Auchenoglanis
Temporal range: Upper Miocene - Recent
Auchenoglanis occidentalis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Claroteidae
Subfamily: Auchenoglanidinae
Genus: Auchenoglanis
Günther, 1865
Type species
Pimelodus biscutatus
É. Geoffroy St. Hilaire, 1809

Auchenoglanis is a primitive member of the subfamily Auchenoglanidinae (also includes Notoglanidium and Parauchenoglanis) and represents a stem group.[2]

Species of this genus occur predominantly in the Nilo-Sudan region and Western Africa, but also in the Congo River, Lakes Albert and Tanganyika.[3]

Auchenoglanis species mainly feed on insect aquatic larvae and eventually on small mollusks, alevin, and swimming insects. These feeding habits should also enable them to stand a relatively wide range of ecological conditions.[2]

Living species

Following a taxonomic review in 1991, only two living species (marked with a star* in the list) were recognized in this genus.[3] This is followed by FishBase.[1] A review in 2010 found that there are six additional species, bringing the total to eight,[4] and this is followed by Catalog of Fishes.[5] Genetic studies indicate that additional, currently unrecognized species exist.[6]

  • Auchenoglanis acuticeps Pappenheim, 1914
  • Auchenoglanis biscutatus* (É. Geoffroy Saint-Hilaire, 1809)
  • Auchenoglanis occidentalis* (Valenciennes, 1840) (Bubu)
  • Auchenoglanis sacchii (Vinciguerra, 1898)
  • Auchenoglanis senegali Retzer, 2010
  • Auchenoglanis tanganicanus Boulenger, 1906
  • Auchenoglanis tchadiensis Pellegrin, 1909
  • Auchenoglanis wittei Giltay, 1930

Fossil species

Auchenoglanis is rare in the fossil record compared to other African catfishes.[2] Auchenoglanis includes an extinct species, Auchenoglanis soye from Western Chad.[2] A few other fossils are also attributed to Auchenoglanis with no specific species described.[2]

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gollark: So they'll... all magically work out how to allocate resources even without any real incentive there?
gollark: But we need to coordinate big ones to do much.
gollark: Which will probably work in small groups.
gollark: It doesn't seem like a coherent vision. It just seems like you want people to be nice to each other and hope it'll work somehow?

References
  1. Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Auchenoglanis in FishBase. December 2011 version.
  2. Otero, Olga; Likius, Andossa; Vignaud, Patrick; Brunet, Michel (2007). "A New Claroteid Catfish (Siluriformes) From the Upper Miocene of Toros-Menalla, Chad: Auchenoglanis soye, sp. nov". Journal of Vertebrate Paleontology. 27 (2): 285–294. doi:10.1671/0272-4634(2007)27[285:ANCCSF]2.0.CO;2.
  3. Teugels, G. G.; Risch, L.; De Vos, L.; Audenaerde, D.F.E. Thys van den (1991). "Generic review of the African bagrid catfish genera Auchenoglanis and Parauchenoglanis with description of a new genus". Journal of Natural History. 25 (2): 499–517. doi:10.1080/00222939100770311.
  4. Retzer, M.E. (2010). "Taxonomy of Auchenoglanis Günther 1865 (Siluriformes: Auchenoglanididae)". Zootaxa. 2655: 26–51.
  5. Eschmeyer, W. N.; R. Fricke & R. van der Laan (eds.). "Auchenoglanis species". Catalog of Fishes. California Academy of Sciences. Retrieved 26 July 2018.
  6. Okwiri, B.; L. Cao; D.W. Nyingi; E. Zhang (2018). "Molecular Phylogenetic Analysis of the Catfish Species Auchenoglanis occidentalis (Valenciennes, 1840) (Pisces: Claroteidae) from Lake Turkana in East Africa: Taxonomic Implications". Zootaxa. 4450 (1): 115–124. doi:10.11646/zootaxa.4450.1.8.


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