Harlequin Rasbora (Trigonostigma heteromorpha)
One of the most recognisable schooling fish in the hobby, the Harlequin Rasbora features a pink-copper body with a distinctive black wedge marking on its rear. Peaceful, hardy, and stunning in a group, it's a staple for planted community tanks.
Care at a Glance:
- Minimum Tank Size: 55L with plants and gentle flow
- Temperature: 24–28°C
- pH Range: 6.0–7.0
- Water Hardness: Soft to moderate
- Temperament: Peaceful, schooling
- Diet: Flakes, micro-pellets, frozen daphnia and brine shrimp
- Max Size: 4–5cm
- Lifespan: 5–6 years
- Care Level: Easy
Tank Mates: Peaceful community fish such as tetras, corydoras, dwarf cichlids, and shrimp; keep in groups of 8+.
Origin: Southeast Asia — forest streams (Malaysia, Singapore, Sumatra)