Dwarf Gourami and Harlequin Rasbora Compatibility Overview
Dwarf Gourami and Harlequin Rasbora can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Dwarf Gourami is semi and Harlequin Rasbora is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Dwarf Gourami | Harlequin Rasbora | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 72โ81ยฐF | โ 72โ81ยฐF |
| pH Range | 6.0โ7.5 | 5.5โ7.5 | โ 6.0โ7.5 |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 3.5 in | 1.75 in | โ ๏ธ 2.0ร difference |
| Min. Group | 1+ | 8+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Dwarf Gourami โ Trichogaster lalius
Colourful labyrinth fish that is generally peaceful but can be territorial toward similar species. Susceptible to Dwarf Gourami Iridovirus.
โ Full Dwarf Gourami care guide
Harlequin Rasbora โ Trigonostigma heteromorpha
Active mid-level schooling fish with a distinctive black triangular patch. One of the best all-around community tank fish.
Frequently Asked Questions
Can Dwarf Gourami live with Harlequin Rasbora?
Yes, in a well-planned setup. Dwarf Gourami and Harlequin Rasbora can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Dwarf Gourami is semi and Harlequin Rasbora is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Dwarf Gourami and Harlequin Rasbora together?
A minimum of 55 gallons is recommended for keeping Dwarf Gourami and Harlequin Rasbora together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Dwarf Gourami and Harlequin Rasbora?
72โ81ยฐF โ inside Dwarf Gourami's 72โ82ยฐF and Harlequin Rasbora's 72โ81ยฐF.
Is a Dwarf Gourami aggressive toward a Harlequin Rasbora?
Dwarf Gourami is semi and Harlequin Rasbora is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Dwarf Gourami and Harlequin Rasbora
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |