Harlequin rasbora care
Trigonostigma heteromorpha
Harlequin rasbora (Trigonostigma heteromorpha) grows to about 4.5 cm (1.8 in) and needs a tank of at least 54 liters (14 US gallons). Keep it at 22–28 °C (72–82 °F) with a pH of 5.5–7.5.
FreshwaterEasyPeacefulPrefers soft water
Adult size4.5 cm · 1.8 in
Smallest tank54 L · 14 gal
Temperature22–28 °C · 72–82 °F
pH5.5–7.5
GroupGroups of 8+
TemperamentPeaceful
SwimsMiddle
DietOmnivore
Usually fine with
Neon tetraGuppyBetta (Siamese fighting fish)PlatyCardinal tetraBronze corydorasZebra danioMollyBristlenose plecoCherry barbTiger barbSwordtail
Avoid with
Fancy goldfishParadise fishConvict cichlidOscarJack DempseyDemasoni cichlidSeverumCommon goldfishKoiPea pufferBala sharkFigure-eight puffer
Track your tank with Guppi
Log water tests by tapping your kit’s colors, get water change reminders and check every tankmate before you buy.
Typical ranges from hobby references, checked by hand. Individual fish and local water vary.
Rasbora arlequínRasbora arlequimRasbora arlequinKeilfleckbärblingRasbora arlecchinoHarlequin rasbora