Barbus treurensis

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	ACTINOPTERYGII	CYPRINIFORMES	CYPRINIDAE

Scientific Name:

Barbus treurensis

Species Authority:

Groenewald, 1958

Common Name/s:

English

–

Treur River Barb

Assessment Information [top]

Red List Category & Criteria:

Endangered B1ab(i,ii,iv,v)+2ab(i,ii,iv,v) ver 3.1

Year Assessed:

2007

Assessor/s

Engelbrecht, J. & Bills, R.

Evaluator/s:

Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Unit)

Justification:
The population has a restricted geographic range and meets the thresholds for Endangered under criterion B. There are only two known viable populations - in the upper catchments of the Blyde River system. Despite the two sites being proclaimed National Heritage sites to protect the species there are still serious potential threats from introduced alien fishes (Oncorhynchus mykiss, Salmo trutta and Micropterus dolomieu). The species qualifies as Endangered.

History:

1996	–	Lower Risk/conservation dependent
1994	–	Vulnerable (IUCN)
1990	–	Vulnerable (IUCN 1990)
1988	–	Vulnerable
1986	–	Endangered (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description:	Upper Blyde River - only remaining natural population is above a waterfall in the upper Blyde River. Reintroduced to the Treur River (part of its natural distribution).
Countries:	Native: South Africa (Mpumalanga)

Population [top]

Population Trend:	Stable

Population Trend:

Stable

Habitat and Ecology [top]

Habitat and Ecology:	Deeper rocky pools and runs in medium sized streams. Prefers main channels areas.
Systems:	Freshwater

Threats [top]

Major Threat(s):	Alien fish predators are the major impact on this species particularly small mouth bass (Micropterus dolomieu). Extirpated from the type locality.

Major Threat(s):

Alien fish predators are the major impact on this species particularly small mouth bass (Micropterus dolomieu). Extirpated from the type locality.

Conservation Actions [top]

Conservation Actions:	Reintroduced successfully into the Treur River (type locality). Both areas of occupancy have been proclaimed National Hertiage sites to protect the species.

Conservation Actions:

Reintroduced successfully into the Treur River (type locality). Both areas of occupancy have been proclaimed National Hertiage sites to protect the species.

Citation:	Engelbrecht, J. & Bills, R. 2007. Barbus treurensis. In: IUCN 2009. IUCN Red List of Threatened Species. Version 2009.2. <www.iucnredlist.org>. Downloaded on 10 February 2010.
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