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Harlequin rasbora
Harlequin rasbora

Scientific Name: Trigonostigma heteromorpha

Origin: South-East Asia

Family: Cyprinidae

Other Names: Rasbora heteromorpha

Technical Info

Temperature: 24 - 28 ℃

pH: 6.3 - 6.7

GH: 2 - 5

Max size: 4,5 cm

Min Tank size: 40 Ltr

Position in Aqua: No special swimming level



Lively, peaceful schooling fish that you can keep in a community aquarium. The aquarium should be planted densely with enough hiding places. You should leave enough free swimming space. A dark substrate and a dimmed light by using floating plants bring out the colours of the fish.



They are omnivorous. You should give them a great variety of live, frozen and dry food.



Breeding is not easy. The temperature should be higher (25-28^(o)C or 77-82^(o)F) , and the water should be soft and acid (GH 2, PH 5,3-5,7). You should use a peat filter. The aquarium should be setup with some plants with large leaves. The eggs are spawned under those leaves. After spawning the parents should be removed and the aquarium darkened. After 24 hours the eggs hatch. When the young fishes are swimming free you can raise them with very fine infusoria.


Compatible with

Black Phantom Tetra, Cardinal Tetra, Catfish, Chinese Algae Eater, Ghost Shrimp, Glass Fish, Glow Light Tetra, Guppies, Honey Gouramis, Neon Tetra, Plecos, one Red Tailed Shark, White Cloud



Harlequin Rasboras are egglayers that deposit their adhesive spawns on the undersides of leaves.