Nannaethiops unitaeniatus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Characiformes Distichodontidae

Scientific Name: Nannaethiops unitaeniatus Günther, 1872
Regional Assessments:
Common Name(s):
English Oneline Tetra, Carp, One-striped African Characin, Onestriped African Characin
French Nannaethiops
Taxonomic Notes: It is distinguished from Neolebias by its complete lateral line.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2009-05-01
Assessor(s): Getahun, A., Lalèyè, P., Moelants, T. & Olaosebikan, B.D.
Reviewer(s): Snoeks, J., Tweddle, D., Getahun, A., Lalèyè, P., Paugy, D., Zaiss, R., Fishar, M.R.A & Brooks, E.
This species has a wide distribution, with no known major widespread threats. It is therefore listed as Least Concern. Within the west African region, this species is known from five to six locations from Niger and Cross Rivers in Nigeria and Cameroon, and the Chad basin. Its AOO is less than 2,000 km². The species is found the areas affected by deforestation due to agriculture, mining and urbanisation development. It is assessed as Vulnerable. More information is required on the species distribution and threats within north eastern Africa, and it is therefore categorized as Data Deficient. It is estimated that less than 5 % of the species is found in the central African region and it is therefore categorized as Not Applicable.

Geographic Range [top]

Range Description:This species is known from Nigeria to Sudan.

Central Africa: Nannaethiops unitaeniatus is known from the Dja River basin and from Bangui, Ubangui basin. Elsewhere, it is known from the Lower Guinea region where it is widespread in all major drainages.

Northeast Africa: It is present in the upper White Nile.

Western Africa: It occurs in the Niger and Cross Rivers in Nigeria, and is reported from the Chad basin.
Countries occurrence:
Angola (Cabinda); Cameroon; Central African Republic; Congo; Congo, The Democratic Republic of the; Equatorial Guinea; Gabon; Nigeria; South Sudan
FAO Marine Fishing Areas:
Atlantic – eastern central
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:No information available.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Nannaethiops unitaeniatus is a pelagic species. It is distinguished from Neolebias by its always complete lateral line. It lives in small streams where and is omnivorous feeding mainly crustaceans and insects (Mills and Vevers 1989).

Use and Trade [top]

Use and Trade: This species is part of the aquarium trade.

Threats [top]

Major Threat(s): This is a commercially valuable aquarium fish. It is threatened by oil exploration in the lower Niger delta and the potential water basin transfer from the Oubangui to the Chari system.

Conservation Actions [top]

Conservation Actions: None known. More research is needed into this species threats and potential conservation measures, as well as monitoring of population trends. Habitat conservation is also required.

Citation: Getahun, A., Lalèyè, P., Moelants, T. & Olaosebikan, B.D. 2010. Nannaethiops unitaeniatus. The IUCN Red List of Threatened Species 2010: e.T181742A7719603. . Downloaded on 20 October 2017.
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