Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Characiformes Alestidae

Scientific Name: Alestopetersius nigropterus
Species Authority: Poll, 1967
Hemigrammopetersius nigropterus (Poll, 1967)
Petersius hilgendorfi (non Boulenger, 1899)
Petersius leopodianus (non Boulenger, 1899)

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(v) ver 3.1
Year Published: 2010
Date Assessed: 2009-02-16
Assessor(s): Moelants, T.
Reviewer(s): Brummett, R., Mbe Tawe, A.N., Dening Touokong, C., Reid, G.M., Snoeks, J. Staissny, M., Moelants, T., Mamonekene, V., Ndodet, B., Ifuta, S.N.B., Chilala, A., Monsembula, R., Ibala Zamba, A., Opoye Itoua, O., Pouomogne, V., Darwall, W. & Smith, K.
The species is only known from Lake Mai-N'dombe (Leopold II), which has a surface of 2,300 km². The use of small mesh size nets (mosquito nets) poses a threat to the population size. The species is therefore listed as Endangered.

Geographic Range [top]

Range Description: Alestopetersius nigropterus is only confirmed from Lake Mai 'N-Dombe. However recent records from the Lengoué River (AMNH) suggest this species has a wider distribution in middle Congo.
Countries occurrence:
Congo, The Democratic Republic of the
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: This is a pelagic species.
Systems: Freshwater

Threats [top]

Major Threat(s): In Lake Mai-N'Dombe, the use of small mesh size nets, mosquito nets are used as fishing nets. These nets are called caterpillar nets because they hold every species that is in the lake. Methane reservoirs discovered under the lake are expected to be exploited.

Conservation Actions [top]

Conservation Actions: None known.

Classifications [top]

5. Wetlands (inland) -> 5.5. Wetlands (inland) - Permanent Freshwater Lakes (over 8ha)
suitability: Suitable  

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
3. Energy production & mining -> 3.2. Mining & quarrying
♦ timing: Future    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.4. Fishing & harvesting aquatic resources -> 5.4.3. Unintentional effects: (subsistence/small scale)
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

5. Biological resource use -> 5.4. Fishing & harvesting aquatic resources -> 5.4.6. Motivation Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

Bibliography [top]

Pan-Africa freshwater assessment references. Currently, full citations for references used in the Pan-Africa biodiversity assessments are unavailable on the Red List web site. These will be added to the site in 2011. We apologise for any inconvenience this causes.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: (Accessed: 2 September 2010).

Citation: Moelants, T. 2010. Alestopetersius nigropterus. The IUCN Red List of Threatened Species 2010: e.T182881A7994284. . Downloaded on 07 October 2015.
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