Harlequin Rasbora
Trigonostigma heteromorpha
Cyprinidae
About
The harlequin rasbora is a hardy, peaceful cyprinid from the peat swamps and blackwater streams of the Malay Peninsula, Sumatra and Thailand. It is instantly recognised by the black wedge-shaped 'harlequin' patch on its coppery-pink flanks. Adaptable and long-lived, it is one of the best beginner shoaling fish, forming coordinated groups that move beautifully through planted community aquaria.
Care
Keep in shoals of 8+ in a planted tank with soft to moderately hard water and gentle flow. Very adaptable and peaceful, ideal for community setups.
Diet
Easygoing omnivore; feed a varied diet of dry foods plus frozen/live foods for best colour.
Tankmate compatibility
Possible with care (39)
Avoid (2)
Computed by the AquaSage engine for a spacious reference tank — always check the full verdict for your exact setup in the calculator.