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Oreichthys cosuatis (HAMILTON, 1822)

March 13th, 2012 — 1:24pm

An assortment of undescribed Oreichthys spp. from India, Myanmar and Thailand are currently traded as O. cosuatis. It can be distinguished from other described members of the genus by lacking a black blotch on the caudal peduncle, plus the following combination of characters: 2-3 perforated scales in lateral line; ½6½ between pelvic-fin origin and dorsal midline; presence of dark stripe in centre of anal-fin, forming a triangular blotch in adult individuals; dorsal-fin with whitish tip and broad, black, subdistal margin in the upper portion of the fin; 11-13 rows…

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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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Hampala dispar SMITH, 1934

Spotted Hampala Barb

March 13th, 2012 — 1:24pm

The genus currently contains seven species of which H. macrolepidota and, to a lesser extent, H. dispar are the only ones seen with any regularity in the aquarium trade. As well as having the widest distribution H. macrolepidota is also the largest member of the group. All representatives can appear superficially similar at first glance, the exception being H. lopezi which is endemic to a single island in The Philippines and displays a unique lateral band-like marking on the flanks.

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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' 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' 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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Puntius terio (HAMILTON, 1822)

Onespot Barb

March 13th, 2012 — 1:24pm

This species is uncommon in the aquarium trade which is a little surprising given its huge natural range. Different populations can vary in colour pattern to an extent though all share the defining aspects given by Hamilton, comprising a diffuse yellow-golden marking on the operculum plus a dark spot on the caudal peduncle. The latter is usually surrounded by a variably-sized golden-yellow margin, and the dorsal-fin often contains irregular dark spots and streaks, these sometimes forming a longitudinal band.

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Desmopuntius foerschi (KOTTELAT, 1982)

March 13th, 2012 — 1:24pm

D. foerschi is sometimes traded as ‘boomerang barb’ or ‘Foersch’s fire barb’ and is included in a group of closely-related, similar-looking fishes which were moved into the new genus Desmopuntius by Kottelat (2013).

It can be told apart from other vertically-striped congeners by possession of additional dark blotches between the second, third and fourth vertical bars and a further marking at the posterior base o…

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Pethia erythromycter KULLANDER, 2008

Lipstick Barb

March 13th, 2012 — 1:24pm

This species first appeared in the aquarium hobby in 2006 and is sometimes traded under the name ‘Tulip barb’. It was officially described by Kullander in early 2008 in a paper describing five new Puntius species from Kachin, all of which are superficially similar in possession of a dark band or blotch on the caudal peduncle.

P. erythromycter can be distinguished b…

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Pethia stoliczkana (DAY, 1871)

March 13th, 2012 — 1:24pm

This species is confused with P. ticto in much of the available literature and is sometimes listed as a synonym of it. Although some populations of the two species possess a similar colour pattern (there are reports of a P. ticto variant from the south of West Bengal state in India with a red, black-flecked dorsal-fin, for example) they do not occur in the same waters in nature and can be distinguished by examining the lateral line. This is complete in…

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