Jump to content

Burchell's redfin

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Tom.Reding (talk | contribs) at 06:20, 7 November 2016 (Fix Category:CS1 maint: Uses authors parameter: vauthors/veditors or enumerate multiple authors/editors/assessors; WP:GenFixes on using AWB). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Burchell's redfin
Burchell's redfin from the Breede catchment
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Cypriniformes
Family:
Cyprinidae
Genus:
Pseudobarbus
Species:
P. burchelli
Binomial name
Pseudobarbus burchelli
(A. Smith, 1841)

The Burchell's redfin (Pseudobarbus burchelli), also known as Tradouw redfin, Tradou redfin or the 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.[1]

It is endemic to the Western Cape Province of South Africa, where it occurs in the Moeras and Tradouw Rivers. Whether the similar fishes from the Breede River and Heuningnes River are also P. burchelli is undetermined.[2]

Two populations are known with certainty, one in the Moeras River at Barrydale and one at the Tradouw River at Tradouw's 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 seem to consist of the introduced bluegill (Lepomis macrochirus) and Banded Tilapia (Tilapia sparrmanii) only.[2]

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.[2]

Footnotes

  1. ^ de Graaf et al. (2007), Swartz & Impson (2007)
  2. ^ a b c Swartz & Impson (2007)

References

  • 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. doi:10.1163/157075607780002069 (HTML abstract)
  • Template:IUCN2008


Stub icon

This Cyprininae article is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Burchell%27s_redfin&oldid=748250246"