Ember Tetra and Harlequin Rasbora Compatibility Overview
Ember Tetra and Harlequin Rasbora can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Ember Tetra | Harlequin Rasbora | Verdict |
|---|---|---|---|
| Temperature | 73โ84ยฐF | 72โ81ยฐF | โ 73โ81ยฐF |
| pH Range | 5.5โ7.0 | 5.5โ7.5 | โ 5.5โ7.0 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 0.8 in | 1.75 in | โ ๏ธ 2.2ร difference |
| Min. Group | 8+ | 8+ | See below |
| Min. Tank Size | 20 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Ember Tetra โ Hyphessobrycon amandae
Tiny orange-red schooling tetra that is among the most adaptable nano fish. Peaceful with everything too small to eat them.
โ Full Ember Tetra 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 Ember Tetra live with Harlequin Rasbora?
Yes, in a well-planned setup. Ember Tetra and Harlequin Rasbora can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Ember Tetra and Harlequin Rasbora together?
A minimum of 20 gallons is recommended for keeping Ember Tetra and Harlequin Rasbora together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Ember Tetra and Harlequin Rasbora?
73โ81ยฐF โ inside Ember Tetra's 73โ84ยฐF and Harlequin Rasbora's 72โ81ยฐF.
Is a Ember Tetra aggressive toward a Harlequin Rasbora?
Ember Tetra is peaceful and Harlequin Rasbora is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Ember Tetra 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 | 20 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 29 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 55 gal | Best when keeping larger schools or reducing territorial pressure. |