Compatibility Overview
Harlequin Rasbora and Honey Gourami can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 40-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Harlequin Rasbora | Honey Gourami | Verdict |
|---|---|---|---|
| Temperature | 72–81°F | 71–82°F | ✅ 72–81°F |
| pH Range | 5.5–7.5 | 6.0–7.5 | ✅ 6.0–7.5 |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 1.75 in | 2 in | ✅ Similar |
| Min. Group | 8+ | 1+ | See below |
| Min. Tank Size | 40 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Harlequin Rasbora — Trigonostigma heteromorpha
Active mid-level schooling fish with a distinctive black triangular patch. One of the best all-around community tank fish.
→ Full Harlequin Rasbora care guide
Honey Gourami — Trichogaster chuna
One of the most peaceful gouramis available. Not affected by Dwarf Gourami Iridovirus. Excellent nano community fish.
Frequently Asked Questions
Can Harlequin Rasbora live with Honey Gourami?
Yes, in a well-planned setup. Harlequin Rasbora and Honey Gourami can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 40-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Harlequin Rasbora and Honey Gourami together?
A minimum of 40 gallons is recommended for keeping Harlequin Rasbora and Honey Gourami together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Harlequin Rasbora and Honey Gourami?
72–81°F
Is a Harlequin Rasbora aggressive toward a Honey Gourami?
Harlequin Rasbora is peaceful and Honey Gourami is peaceful. No major aggression issues are expected between these species.