''Alestion'' is

monospecific genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...

of freshwater

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

belonging to the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Alestidae African tetras (family (biology), family Alestidae, formerly spelled Alestiidae) are a group of Characiformes, characiform fish found exclusively in Africa. This family contains about 18 genera and 119 species. Among the best known members are th ...

, the African tetras. The only species in the genus is ''Alestion rapax''. This fish is known only from the

Kwilu River The Kwilu River ( Portuguese: ''Rio Cuílo''; French: ''Rivière Kwilu''; Dutch: ''Kwilu Rivier'') is a major river in both Lunda Norte Province and Lunda Sul Province in Angola as well as Kwilu Province, formerly known as Bandundu province, ...

in the lower drainage basin of the

Congo River The Congo River, formerly also known as the Zaire River, is the second-longest river in Africa, shorter only than the Nile, as well as the third-largest river in the world list of rivers by discharge, by discharge volume, following the Amazon Ri ...

in the Democratic Republic of Congo.

References

{{Taxonbar, from=Q116188083, from2=Q116188103 Alestidae Fish described in 2019 Taxa named by Tyson R. Roberts Monotypic ray-finned fish genera