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Devario acrostomus (FANG & KOTTELAT, 1999)

March 13th, 2012 — 1:26pm

The type series was collected during the dry season from localities with varying gradient both within the Nam Leuk mainstream and smaller tributaries. In the tributaries the fish were found congregating in pools some of which were isolated on steep slopes. All habitats above Tad Leuk falls were characterised by clear to very clear water under forest cover while below the falls they were dominated by exposed basalt slabs with some underground water channels.

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Devario acuticephalus (HORA, 1921)

March 13th, 2012 — 1:26pm

Described from Manipur state, northeastern India and also known from neighbouring Nagaland state. In the original description Hora refers to it as ‘widely-distributed’ in the region but during an assessment conducted by the IUCN in 2010 it was recorded only from a handful of localities and restricted to an area of less than 15,000 square kilometres. Most habitats lie within the Manipur river basin, including the tributary Iril and Khuga drainages, and the Di…

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Betadevario ramachandrani PRAMOD, FANG, REMA DEVI, LIAO, INDRA, JAMEELA BEEVI & KULLANDER, 2010

March 13th, 2012 — 1:25pm

As far as we know this species is yet to arrive to the international aquarium trade though it has been maintained by a handful of Indian aquarists.

It’s restricted geographical range and difficulty of collection mean it’s unlikely to become available in numbers unless adopted by commercial breeders.

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Brachydanio jaintianensis (SEN, 2007)

March 13th, 2012 — 1:25pm

To date known only from the Jaintia Hills district, Meghalaya state, northeastern India meaning its natural waters are part of the Brahmaputra River system. The type locality is given as ‘Tre Rangriang, Jowai’ in the description paper, but we’ve been unable to locate this on any map. The paratypes were collected at ‘Thlu Muwi’, which probably refers to the ancient stone bridge built over the Muwi stream, a place popular with tourists due to the nearby Muwi waterfalls.

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Danionella dracula CONWAY & RÜBER, 2009

March 13th, 2012 — 1:24pm

This species is available in the trade on occasion and has been sold as Danionella sp. 'neon green' or 'flourescent green'. The specific name was inspired by its jaw morphology which according to current knowledge is unique among cypriniform fishes. Both upper and lower jaws contain a series of toothlike odontoid processes; these are only rudimentary in females but in males appear to form rows of teeth of which the front pair is large and fang-like. The upper fangs project th…

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Brachydanio sp. 'TW01'

Black-barred 'Danio'

March 13th, 2012 — 1:24pm

Apparently discovered close to the coastal town of Gwa in Rakhine State, western Myanmar. Rakhine is largely cut off from the rest of the country by the Rakhine Yoma/Arakan mountains which form a natural barrier along its eastern side.

Rakhine is located within a tropical monsoon region and has a pronounced rainy season between May and October, while at other times it can be quite dry. The streams thus swell in depth by a metre or mo…

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Brachydanio tinwini (KULLANDER & FANG, 2009)

Gold Ring 'Danio'

March 13th, 2012 — 1:24pm

Adult size is comparable to B. nigrofasciata, and in the description paper the authors hypothesise that the two are closely-related given they share other features such as similar barbel length (plus some additional merisitic counts), absent lateral line and spotted pelvic fins.

The two are easy to tell apart, however, since in B. tinwini the P+1 stripe is composed of a series of spots (vs. solid), it possesses an indistinct P+2 str…

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Brachydanio sp. 'hikari'

Hikari 'Danio'

March 13th, 2012 — 1:24pm

This potentially-undescribed species first became available in 2002, and males and females were marketed as ‘Danio sp. hikari yellow’ and ‘D. sp. hikari blue’, respectively. Subsequent DNA testing in the United States revealed them to be the same species and genetically distinct from the very similar B. kerri. It can be told apart as the central body (P) stripe always extends into the caudal fin whereas in B. kerri it terminates at the caudal peduncle. Only a single population of B. kerri was sampled in the stu…

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Celestichthys erythromicron (ANNANDALE, 1918)

March 13th, 2012 — 1:24pm

This species was formerly included in the genus Microrasbora although it’s long-been considered a danionin by certain authors, e.g., Kottelat and Witte (1999) and was placed within the genus Danio for a period.

In the aquarium trade it’s marketed under various names including ’emerald dwarf danio’, ‘thick band purple zebra danio’ and ‘cross-banded dwarf rasbora’.

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Celestichthys margaritatus ROBERTS, 2007

Celestial Pearl 'Danio'

March 13th, 2012 — 1:24pm

The type locality is an area of permanently-flooded grassland formed by the damming of a spring for agricultural purposes. The water is only around 30cm deep, transparent and supports dense growths of aquatic plants, mostly from the family Hydrocharitaceae which includes such genera as Elodea, Egeria and Blyxa. Sympatric species included Devario sondhii, a Microrasbora very similar to M. rubescens, an undescribed Yunnanilus known to aquarists as the ‘rosy’ loach and Channa harcourtbutleri.

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