Clarias werneri

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	ACTINOPTERYGII	SILURIFORMES	CLARIIDAE

Scientific Name:	Clarias werneri
Species Authority:	Boulenger, 1906
Common Name/s: English – Werner's Catfish

Assessment Information [top]

Red List Category & Criteria:	Least Concern     ver 3.1
Year Assessed:	2010
Assessor/s:	Getahun, A. & Hanssens, M.
Reviewer/s:	Snoeks, J., Tweddle, D., Getahun, A., Lalèyè, P., Paugy, D., Zaiss, R., Fishar, M.R.A & Brooks, E.
Justification: This species has a wide enough distribution, with no known major widespread threats to qualify as Least Concern. It has also been assessed regionally as Least Concern for eastern Africa. Due to limited information on this species distribution, abundance and threats, it has been categorised as Data Deficient in northeast Africa.
History:	2006 – Least Concern (IUCN 2006)

Geographic Range [top]

Range Description:	This species is found from Sudan to Tanzania. Eastern Africa: This species is known from Lakes Victoria, Kyoga, Edward and George. It is also present in Victoria Nile and their affluent streams and rivers such as Nabugabo, Kachera, Nakivali and Kijanebarola. Also in Malagarasi river (De Vos et al. 2001) and Rusizi River. Northeast Africa: It is found in Bahr el Jebel, Sudan
Countries:	Native: Burundi; Kenya; Sudan; Tanzania, United Republic of; Uganda
Range Map:	(click map to view full version)

Population [top]

Population:	Population not known, but rather rare in fisheries catches.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	This species inhabits lakes and rivers (Teugels 1986), marginal swamps marginal grass areas and papyrus swamps (Eccles 1992). It is mainly insectivorous (larval and adult aquatic Coleptera, terrestrial insects, Povilla, chironomid larvae). Other food items included ostracoda, gastropods, plants, copepoda and Hydracarina (Teugels 1986).
Systems:	Freshwater

Threats [top]

Major Threat(s):

Loss of swamps and other wetlands around lakes and rivers due to farming extension is a threat to this species in eastern Africa. Further threats are unknown.

Conservation Actions [top]

Conservation Actions:

No information available. Population trends need monitoring, and habitat maintenance and conservation my be required.

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: http://www.iucnredlist.org. (Accessed: 2 September 2010).