Rationale
(Changed due to Same category and criteria)
Although habitat is continuing to decline in the Vaal catchment, mainly because of pollution and sewage spills from Gauteng cities in South Africa, this species is widespread across the Orange River System and it occurs in many catchments where there are relatively few threats.
Distribution
Endemic to the Orange-Senqu and Vaal River systems in the Orange-Senque River basin (Skelton 1993). Has been introduced through the inter-basin water transfer scheme to the Great Fish River in the Eastern Cape where it has become established.
Pollution from major industrial centres such as Gauteng Province in South Africa is probably the biggest threat. Especially sewage overflow which has been documented to cause major fish kills in the Vaal River in recent years and has led to subsequent eutrophication of the system. Hybridisation between Orange River Mudfish (Labeo capensis) and Moggel (Labeo umbratus) is an additional threat. Possible hybrids have been found at a few impoundments in the Free State Province, South Africa.
Uses and trade
Important angling species in the Free State Province, South Africa.
Conservation
Pollution from industrial centres and especially sewage overflow needs to be addressed through the South African River Health Programme. The species remains abundant, however there are no protection measures in place to restrict threats.
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address = {www.iucnredlist.org},
author = {IUCN},
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,@book{63280,
address = {Cape Town},
author = {Bruton, M.N., Jackson, P.B.N. and Skelton, P.H.},
publisher = {Centaur Publishers},
title = {Pocket guide to the freshwater fishes of southern Africa.},
year = {1982}
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,@article{63280,
author = {Mulder, P.F.S. },
journal = {Zoologica Africana},
number = {1},
pages = {1--14},
title = {Aspects on the ecology of Barbus kimberleyensis and Barbus holubi in the Vaal River},
volume = {8},
year = {1973}
}
,@phdthesis{63280,
author = {Barkhuizen, L.M.},
school = {University of the Free State},
title = {An assessment of fish and fisheries in impoundments in the Upper Orange-Senqu and lower Vaal River Basin. PhD Thesis},
year = {2015}
}
,@phdthesis{63280,
author = {Göldner, H.J. },
school = {Potchefstroomse Universiteit },
title = {‘n Populasiestudie van varswatervisse in Baberspan, Wes-Transvaal. M. Sc. Verhandeling},
year = {1967}
}
,@phdthesis{63280,
author = {Hamman, K.C.D},
school = {Randse Afrikaanse Universiteit},
title = {Aspekte van die visbevolkingsdinamika van die Hendrik Verwoerddam met verwysing na die ontwikkeling van ‘n visserybestuursplan. Ph.D. Proefskrif},
year = {1981}
}
,@article{63280,
author = {Tomasson, T., Bruton, M.N. and Hamman, K.C.D. },
journal = {Fisheries Research},
pages = {279--308},
title = {The demography and management of large Cyprinids in a reservoir on the Orange River, South Africa},
volume = {3},
year = {1985}
}
,]
