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Dawkinsia rubrotinctus (JERDON, 1849)

March 13th, 2012 — 1:26pm

This species may have appeared in the aquarium trade under the misapplied names Puntius arulius or P. tambraparniei in the past, both of which are also now classified within Dawkinsia. See the relevant profiles for D. arulius and D. tambraparniei for additional information regarding that confusion, since here we concentrate on D. rubrotinctus.

It was initially described by Jerdon in 1849 but placed in synonymy with P. arulius by Day (1878), where it remained for ov…

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Pethia tiantian (KULLANDER & FANG, 2005)

March 13th, 2012 — 1:25pm

Known only from the remote, mountainous area of Putao in Kachin state, northern Myanmar. The holotype and most of the type series was collected from the Nan Hto Chaung (Nan Hto stream) with the Mali Hka River representing the only other locality known. Both are part of the upper Irrawaddy/Ayeyarwady system.

The Nan Hto Chaung flows through forested hills and…

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Pethia didi (KULLANDER & FANG, 2005)

March 13th, 2012 — 1:24pm

The type locality is a stream with a mixed substrate of mud and stones which flows swiftly through an area of bamboo forest so is quite well-shaded. At time of collection the water was clear but slightly tannin-stained and sympatric species included Pethia thelys, Puntius sophore, Devario strigillifer, Rasbora daniconius, R. rasbora, Acanthocobitis botia, Notopterus notopterus, plus unidentified species of Oreichthys, Parambassis, Xenentodon, and Mastacembelus.

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Barboides gracilis BR√úNING, 1929

March 13th, 2012 — 1:24pm

This species is still very rare in the hobby although it has built up something of a following among enthusiasts of planted 'nano' aquaria and you may see it on sale under the trade names of 'dwarf amber/ember barb'. Its small adult size evolved via a process known as miniaturisation characterised by sexually mature adults with a significantly reduced size of less than 20mm SL. Among bony fishes cyprinids are one of the few groups in which this phenomenon occurs repeated…

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Puntius sahyadriensis SILAS, 1953

Maharaja Barb

March 13th, 2012 — 1:24pm

The hill streams in which this fish can be found are generally shaded by the forest canopy and dense marginal vegetation. Substrates are typically composed of boulders, smaller stones, sand or gravel with submerged tree roots around the margins and quieter areas in which fallen branches and leaf litter collect.

Other fish species occurring in the Tunga…

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Systomus orphoides (VALENCIENNES, 1842)

March 13th, 2012 — 1:24pm

The genus Puntius is currently viewed as something of a catch-all for well over 100 species of small to mid-sized cyprinid. Most experts agree that a full revision is required with the likely outcome that many species will be placed into new or different genera since it is clearly polyphyletic.

When describing the grouping in 1822 Hamilton identified the defining characteristics as: presence or absence o…

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Puntius mahecola (VALENCIENNES, 1844)

March 13th, 2012 — 1:24pm

This species has a chaotic taxonomic history with certain issues still to be resolved. While the name P. mahecola was misapplied to members of the genus Dawkinsia for over a century the fish itself has been widely misidentified as the congener P. amphibius (Valenciennes 1842).

Its identity was partially resolved by Pethiyagoda and Kottelat (2005b) who demonstrated that though valid P. mahecola is not a Dawkinsia spp. but rather a smaller, relatively plain species with a single dark blotc…

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'Barbus' candens NICHOLS & GRISCOM, 1917

March 13th, 2012 — 1:24pm

B.candens is not really suitable for most community aquaria as it has something of a shy, retiring nature and may be intimidated or outcompeted for food by larger/more boisterous tankmates. Choose similarly-sized, peaceful African species such as ‘B.jae, Aplocheilichthys spp., Ladigesia roloffi or Lepidarchus adonis. We suspect it will also do ok with many small South American characins, Otocinclus or smaller Corydoras catfish and other cyprinids like Trigonostigma or Boraras species.

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'Barbus' hulstaerti POLL, 1945

African Butterfly Barb

March 13th, 2012 — 1:24pm

Two closely-related species are also found in the Congo basin and infrequently seen in the trade. ‘B.candens has been collected northeast of the range of ‘B.hulstaerti around the city of Kisangani (formerly Stanleyville) and nearby town of Yangambi. It can be distinguished from ‘B.hulstaerti by its paler body colouration, smaller dark markings on the body and red ventral and anal fins in males. ‘B.papillo is known only from its type locality close to the eastern town of Kindu between the Lualaba and Lomami rivers. It has an elongated central body marking and males possess black dorsal, ventral and anal fins.

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'Barbus' jae BOULENGER, 1903

March 13th, 2012 — 1:24pm

Although gregarious by nature it is a shoaling rather than schooling species which develops a distinct pecking order between males. It should ideally be maintained in a group of 8 or more but the tank must be of a sufficient size which will allow weaker individuals some respite from dominant conspecifics and decorated in such a way that many broken lines of sight are provided. Conversely if kept singly, in a very small group or in cramped conditions it can become withdrawn and subdominant fish may be bullied incessantly.

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