{{Short description|Species of fish}} {{Speciesbox | image=Pseudobarbus burchelli, Jan du Toit's River, a.jpg | image_caption= Burchell's redfin from the Breede catchment | status = CR | status_system = IUCN3.1 | taxon = Pseudobarbus burchelli | display_parents = 3 | authority = (A. Smith, 1841) | synonyms = * ''Barbus burchelli'' <small>Smith, 1841</small> * ''Barbus gobionides'' <small>Valenciennes, 1842</small> * ''Gnatendalia vulnerata'' <small>Castelnau, 1861</small> * ''Barbus vulneratus'' <small>(Castelnau, 1861)</small> * ''Barbus multimaculatus'' <small>Steindachner, 1870</small> |status_ref=<ref name="iucn status 11 November 2021">{{cite iucn |author=Jordaan, M. |author2=Chakona, A. |date=2017 |title=''Pseudobarbus burchelli'' |volume=2017 |article-number=e.T107649398A100170338 |doi=10.2305/IUCN.UK.2017-3.RLTS.T107649398A100170338.en |access-date=11 November 2021}}</ref> }} '''Burchell's redfin''' ('''''Pseudobarbus burchelli'''''), also known as the '''Tradouw redfin''', '''Tradou redfin''' or '''Breede redfin''', is an African freshwater fish species in the family Cyprinidae. ''P. burchelli'' is the type species of its genus ''Pseudobarbus'', and like all of these is tetraploid. The Berg River redfin (''P. burgi'') is a very close relative.<ref>de Graaf ''et al.'' (2007), Swartz & Impson (2007)</ref>

It is endemic to the Western Cape Province of South Africa, where it occurs in the Moeras and Tradouw Rivers.<ref>{{FishBase |genus= Pseudobarbus|species= burchelli| month = April | year = 2014}}</ref> Whether the similar fishes from the Breede River and Heuningnes River are also ''P. burchelli'' is undetermined.<ref name = si2007>Swartz & Impson (2007)</ref>

Two populations are known with certainty, one in the Moeras River at Barrydale and one at the Tradouw River at Tradouws Pass. During summer, low water levels cut off gene flow between these two. The species inhabits deeper sections of the rivers' somewhat peaty water. Other fish are rare, and in Burchell's redfin's range these seem to consist of the introduced bluegill (''Lepomis macrochirus'') and Banded Tilapia (''Tilapia sparrmanii'') only.<ref name = si2007 />

The introduced smallmouth bass (''Micropterus dolomieu'') is expanding in the region and apparently destroys ''P. burchelli'' stocks as it does so. Human interference with the river's flow around Barrydale as well as water pollution have reached dangerous proportions. Consequently, Burchell's redfin is considered to be in serious danger of going extinct within a few years. It is assessed to be critically endangered by the IUCN; no conservation plan has been proposed for the species yet.<ref name = si2007 />

== References == {{Reflist}} * {{aut|de Graaf, Martin; Megens, Hendrik-Jan; Samallo, Johannis & Sibbing, Ferdinand A.}} (2007): Evolutionary origin of Lake Tana's (Ethiopia) small ''Barbus'' species: indications of rapid ecological divergence and speciation. ''Anim. Biol.'' '''57'''(1): 39–48. <small>{{doi|10.1163/157075607780002069}}</small> (HTML abstract) * {{cite iucn |author=Jordaan, M. |author2=Chakona, A. |date=2017 |title=''Pseudobarbus burchelli'' |volume=2017 |article-number=e.T107649398A100170338 |doi=10.2305/IUCN.UK.2017-3.RLTS.T107649398A100170338.en |access-date=11 November 2021}}

{{Taxonbar|from=Q3237999}}

Burchell's redfin Category:Freshwater fish of South Africa Burchell's redfin Category:Taxonomy articles created by Polbot

{{Cyprininae-stub}}