Harlequin rasbora
Trigonostigma heteromorpha
Also called Cardinalfish
Essential gear
- 60 cm+ long tank
- Thermometer
- Water-change hose
- Hand net
- Filter
- Heater
Lifespan
5–6years
Water temperature
22–28°C
pH
5.5–7.0
Water column
Upper-mid level
Likes schooling along thicket edges
Keep in groups
6+ fish
Prefer a same-species group
Diet
Omnivore
Flakes, pellets, bloodworms, brine shrimp
Suggested habitat
Aim for a long tank of at least 600 × 300 × 300 mm. Broadleaf plants or wood as a rear backdrop with a center lane; the triangular mark shows best under side light.
Plates are husbandry references—not build plans or generator parameters. Check your own water, vessel, and stocking before you act.