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Scientific Name Trigonostigma heteromorpha  (Duncker, 1904)
Common Names Harlequin Rasbora
Keilfleckbaerbling (Germany), Kilfläcksrasbora (Sweden)
Type Locality Negri Sembilan, Selangor, Malaysia.
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Size 50mm or 2" SL. Find near, nearer or same sized spp.
Identification Once acclimatised they will show their best colours of a striking violet-blue sheen as well as their typical triangle of black and bronze coloured scales.
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Distribution Asia: Thailand (Narathiwat southwards) to Sumatra, Indonesia.
Thailand Waters (click on these areas to find other species found there)
Singapore waters (click on these areas to find other species found there)
Pacific, Malaysia Waters (click on these areas to find other species found there)
Pacific, Greater Sunda Island Rivers, Borneo Waters (click on these areas to find other species found there)
Pacific, Greater Sunda Island Rivers, Sumatra Waters (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2019.
pH 5.5 - 7.5
Temperature 22.0-28.0°C or 71.6-82.4°F (Show species within this range)
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Compatibility Peaceful and does well in a community tank. Keep in shoals of five or more.
Breeding Reports There is no breeding report.
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Reference Mitteilungen aus dem Naturhistorischen (Zoologischen) Museum in Hamburg v. 21, pp 182, Pl. 1 (fig. 5).
Registered Keepers There is but a single registered keeper, view all "my fish" data.
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There are 4 records of this fish being seen, view them all.
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Last Update 2020 Nov 08 03:05 (species record created: 2012 May 11 22:34)