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It is a smallish fish, just about 40 to 45 mm (1.6 to 1.8 in) long at sexual maturity and twice as long when fully grown. In the breeding season, males and females have the namesake red fins, but males (which are on average a bit larger) also have
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stocks in the Twee River. Ironically, both introductions were well-meaning but misguided attempts to deal with problems caused by animals introduced from foreign countries, that failed to take into account the extremely high level of local
446:
but does not occur naturally in the Twee River redfin's range; it has been introduced to the
Suurvlei River, however. The kurper competes with the redfin for food and probably also eats young
495:. However, as these rivers have strong spring floods and high summer temperatures, neither bluegills nor trout fare as well there as they do elsewhere. Additional threats include
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occurs after a batch of eggs has become fully developed; it is thus repeated several times during a breeding season until the entire batch of eggs has been laid.
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of
Western Cape Province. It is illegal to kill Twee River redfins and for the time being, it may only be caught for supervised transfer trials to other
511:. This is especially harmful, as it deprives the young fish (which are especially under pressure by the introduced species) of their shelter, and allows
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right to the riverbank. As mentioned above, some translocations of this species to presumably secure areas have been started, and
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that have fallen on the water surface. The breeding season extends from late spring to early summer (October to
December).
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450:. It is the probable cause for the redfin's disappearance from the lower Suurvlei River. Competition with the
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de Graaf, Martin; Megens, Hendrik-Jan; Samallo, Johannis & Sibbing, Ferdinand A.
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near the water surface, associating with overhanging riparian growth, in particular
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379:; adults are also known to take other edible matter that drifts by, such as
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is reached at two years of age, and the species can get up to 6 years old.
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475:. The exotic fishes that are harmful to the Twee River redfin are the
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Jordaan, M.; Swartz, E.R.; Van der Walt, R. & Impson, D. (2017).
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species: indications of rapid ecological divergence and speciation.
534:. Landowners are being educated about the uniqueness of the rivers'
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Adults inhabit the deeper pools in rivers, sheltered by boulders or
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390:– up to 400 per female and breeding season – develop
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685:(2007): Evolutionary origin of Lake Tana's (Ethiopia) small
491:), illegally released in its range in the 1990, probably by
244:. It was formerly placed with the South African redfins in
422:. Only an estimated 4,100 adults remain in the world, and
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430:has been cut off. The main threat is introduced
560:South African Institute of Aquatic Biodiversity
604:10.2305/IUCN.UK.2017-3.RLTS.T2564A100140580.en
8:
869:IUCN Red List critically endangered species
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39:
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307:of South Africa, where it occurs in the
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526:It is also listed as Endangered by the
473:Cape Department of Nature Conservation
254:. Its closest living relative is the
7:
846:36B4C219-85C2-4CBA-8C24-B7B6B230F654
833:EB89771D-F3C4-8F53-8B13-AAB2E597D52A
546:studies are being undertaken at the
590:IUCN Red List of Threatened Species
538:and the threat posed by advancing
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323:of the former – namely the
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879:Freshwater fish of South Africa
335:. Some have been introduced to
1:
554:plan is under development by
528:Nature Conservation Ordinance
503:and overuse, and clearing of
354:trees. Young fish gather in
410:This species is considered
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705:10.1163/157075607780002069
674:Impson & Swartz (2007)
548:University of Johannesburg
201:
194:
176:
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61:Scientific classification
59:
37:
28:
23:
628:; Pauly, Daniel (eds.).
278:Distribution and ecology
583:Pseudobarbus erubescens
523:to pollute the rivers.
406:Status and conservation
208:Pseudobarbus erubescens
884:Fish described in 1974
632:Sedercypris erubescens
452:Clanwilliam yellowfish
372:). The food is mainly
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223:Sedercypris erubescens
180:Sedercypris erubescens
642:. April 2014 version.
597:: e.T2564A100140580.
469:Western Cape Province
412:Critically Endangered
305:Western Cape Province
285:
46:Critically Endangered
456:Labeobarbus capensis
497:habitat destruction
489:Oncorhynchus mykiss
481:Lepomis macrochirus
311:to just before its
31:Conservation status
297:
270:as is typical for
256:Clanwilliam redfin
162:S. erubescens
24:Twee River redfin
856:
855:
726:Barbus erubescens
718:Taxon identifiers
707:
499:by humans due to
440:Sandelia capensis
365:Prionium serratum
292:Prionium serratum
268:nuptial tubercles
218:Twee River redfin
214:
213:
204:Barbus erubescens
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708:(HTML abstract)
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501:water pollution
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400:Sexual maturity
333:Suurvlei Rivers
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232:ray-finned fish
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138:Smiliogastrinae
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16:Species of fish
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626:Froese, Rainer
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428:subpopulations
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108:Actinopterygii
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485:rainbow trout
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460:S. erubescens
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448:S. erubescens
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187:P. H. Skelton
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171:Binomial name
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118:Cypriniformes
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874:Pseudobarbus
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698:(1): 39-48.
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608:. Retrieved
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552:conservation
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444:South Africa
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434:fishes. The
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247:Pseudobarbus
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226:) or simply
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18:
692:Anim. Biol.
610:12 November
540:cultivation
521:fertilizers
436:Cape kurper
432:carnivorous
381:terrestrial
370:Thurniaceae
321:tributaries
319:, and some
228:Twee redfin
149:Sedercypris
134:Subfamily:
863:Categories
566:References
556:CapeNature
517:pesticides
483:) and the
420:extinction
331:and upper
329:Middeldeur
317:Leeu River
313:confluence
309:Twee River
260:S. calidus
252:tetraploid
242:Cyprinidae
128:Cyprinidae
652:de Graaf
536:ecosystem
515:carrying
424:gene flow
315:with the
272:cyprinids
156:Species:
84:Kingdom:
78:Eukaryota
794:10904319
735:Wikidata
639:FishBase
558:and the
509:orchards
505:riparian
477:bluegill
465:endemism
426:between
396:spawning
352:riparian
327:, upper
250:. It is
196:Synonyms
124:Family:
98:Chordata
94:Phylum:
88:Animalia
74:Domain:
51:IUCN 3.1
841:ZooBank
781:5207300
741:Q301723
532:habitat
493:anglers
414:by the
384:insects
374:benthic
360:palmiet
356:schools
345:habitat
303:to the
301:endemic
287:Palmiet
237:in the
235:species
144:Genus:
114:Order:
104:Class:
49: (
820:137030
807:688546
768:212404
687:Barbus
656:(2007)
654:et al.
394:, and
299:It is
239:family
189:, 1974
828:Plazi
789:IRMNG
341:farms
230:is a
815:NCBI
802:ITIS
776:GBIF
755:KN8R
612:2021
595:2017
550:. A
519:and
507:for
416:IUCN
388:Eggs
368:, a
337:dams
325:Heks
216:The
763:EoL
750:CoL
701:doi
599:doi
467:in
339:of
262:).
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