Trigonostigma heteromorpha (Duncker, 1904)
Harlequin rasbora
Trigonostigma heteromorpha
photo by JJPhoto

Family:  Cyprinidae (Minnows or carps), subfamily: Danioninae
Max. size:  5 cm TL (male/unsexed)
Environment:  benthopelagic; pH range: 5 - 7; dH range: 5 - 12
Distribution:  Asia: Thailand (Narathiwat southwards) to Sumatra, Indonesia.
Diagnosis:  Color pattern reddish, pinkish or orange body with a conspicuous black stripe from below dorsal-fin origin to middle of caudal-fin base and usually broadened anteriorly so as to have a triangular or hatched shape. Incomplete lateral line reduced to 6-9 pores. No barbels. Branched anal rays, 5 (Ref. 38434).
Biology:  Inhabits forest streams (Ref. 13061). Found in primary peat swamps in larger than 100 fish (Ref. 57235). Feeds on worms, crustaceans and insects (Ref. 7020). Eggs spawned at the underside of broad leaves and similar structures (Ref. 38434). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539). Previously known as "Rasbora" but revised as separated genus by Kottelat & Witte (1999) (Ref. 57235).
IUCN Red List Status: Least Concern (LC); Date assessed: 25 February 2011 Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Torres, Armi G. - 16.06.94
Modified by: OrtaƱez, Auda Kareen - 15.08.06
Checked by: Binohlan, Crispina B. - 10.08.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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