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Varicorhinus platystoma 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cypriniformes Cyprinidae

Scientific Name: Varicorhinus platystoma Pappenheim, 1914
Taxonomic Notes: The taxonomic status of this species is uncertain (De Vos et al. 2001).

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii) ver 3.1
Year Published: 2016
Date Assessed: 2016-02-25
Assessor(s): FishBase team RMCA & Geelhand, D.
Reviewer(s): Kishe, M., Natugonza, V., Nyingi, D. & Snoeks, J.
Contributor(s): Musschoot, T., Boden, G. & Ntakimazi, G.
Justification:
Varicorhinus platystomus is only known from the Mukungwa River, a fast-flowing river in the upper Akagera system in Rwanda. It occurs at one location and it meets the area requirements under Criterion B (extent of occurrence (EOO) of less than 100 km². This large barb is threatened by water turbidity due to erosion on watershed and agriculture expansion leading to a continuing decline in habitat extent and quality. It is therefore listed as Critically Endangered. It also meets the criteria as Endangered under B2 with an area of occupancy (AOO) of less than 500 km²).

Geographic Range [top]

Range Description:This species is only known from two specimens from the Mukungwa River, an affluent of the Nyabarongo River in the Upper Akagera system in Rwanda (De Vos et al. 2001).
Countries occurrence:
Native:
Rwanda
Additional data:
Number of Locations:1
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is rare in fisheries catches.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:Varicorhinus platystomus is found in fast flowing major rivers where it feeds on varied benthic food items including, insects, ostracods and worms. Little else is known about the suitable habitat and ecological requirements of this species. The maximum size is 21 cm TL (De Vos et al. 2001).
Systems:Freshwater
Movement patterns:Unknown

Use and Trade [top]

Use and Trade: There is no use or trade information for this species.

Threats [top]

Major Threat(s): Water turbidity due to erosion on watershed and agriculture extension, pollution as a result of increased use of agrochemicals, fishing pressure and competition with introduced species.

Conservation Actions [top]

Conservation Actions: No conservation actions are known for this species specifically. More research is needed into this species' population numbers and range, biology and ecology, habitat status and threats, as well as monitoring of population numbers and habitat quality.

Citation: FishBase team RMCA & Geelhand, D. 2016. Varicorhinus platystoma. The IUCN Red List of Threatened Species 2016: e.T61232A47241242. . Downloaded on 24 October 2017.
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