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Harlequin Rasbora
Trigonostigma heteromorpha
Family: Cyprinidae
📍 Thailand, Malaysia & Singapore
The harlequin rasbora is recognised by the distinctive black triangular patch on its rear half set against a copper-orange body. Hardy, peaceful, and active in the midwater, it pairs beautifully with planted tanks.
Keeping this species
- diet
- Omnivore – flake, micro pellets, daphnia, brine shrimp
- lifespan
- 5–8 years
- max size
- 4.5 cm (1.8 in)
- tank size
- 10 gallons minimum
- school size
- 8+
- temperament
- Peaceful, schooling
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Tips from the community 💡
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Water it likes
- ph
- 6.0–7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 1–12 dGH
- temperature
- 72–81°F (22–27°C)
Natural Habitat Temperature
75°F — 81°F seasonal range · (Jan low, Apr high)