Rheocles alaotrensis 

Scope: Global

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Atheriniformes Bedotiidae

Scientific Name: Rheocles alaotrensis
Species Authority: (Pellegrin, 1914)
Common Name(s):
English Katrana
Atherina alaotrensis Pellegrin, 1914
Taxonomic Notes: Synonym = Atherina alaotrensis Pellegrin, 1914.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(i,ii,iii,v) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Loiselle, P. & participants of the CBSG/ANGAP CAMP "Faune de Madagascar" workshop, Mantasoa, Madagascar 2001
Reviewer(s): Stiassny, M.L.J., Sparks, J.S. (AMNH, New York) & Darwall, W (Freshwater Biodiversity Assessment Programme)
The species has been found to be more widespread than previously supposed (EOO > 5,000 km² but < 20,000 km²) with substantial subpopulations in several localities. Nevertheless the population is fragmented due to continued deforestation in the associated catchments and suffers from competition and predation by introduced exotic species. The species is assessed as Vulnerable.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from the upper reaches of the eastward-flowing Mangoro and Rianila Rivers. It has also been recorded from Lac Alaotra.
Countries occurrence:
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Current Population Trend:Decreasing
Additional data:

Habitat and Ecology [top]

Citation: Loiselle, P. & participants of the CBSG/ANGAP CAMP "Faune de Madagascar" workshop, Mantasoa, Madagascar 2001. 2004. Rheocles alaotrensis. The IUCN Red List of Threatened Species 2004: e.T19478A8900274. . Downloaded on 23 October 2016.
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