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Can Betta (male) and Harlequin Rasbora Live Together?
Compatible with caution
- Shared temperature window: 76-82°F.
- Shared pH window: 6.5-7.5.
- Bettas are unpredictable; avoid bright/long-finned tankmates and have a backup plan.
Side-by-side
| Parameter | Betta (male) | Harlequin Rasbora |
|---|---|---|
| Adult size | 2.5" | 1.8" |
| Min tank | 5 gal | 10 gal |
| Temperature | 76-82°F | 73-82°F |
| pH | 6.5-7.5 | 6-7.5 |
| Temperament | Aggressive | Peaceful |
| Diet | Carnivore | Omnivore |
Recommended shared tank: 10 gallons or larger. Keep at 76-82°F. Target pH 6.5-7.5.
FAQ
Can Betta (male) and Harlequin Rasbora live together?
Compatible with caution. Shared temperature window: 76-82°F.
What size tank do Betta (male) and Harlequin Rasbora need together?
Plan for at least 10 gallons, more if you keep schooling groups of either species.
See full care guides: Betta (male) · Harlequin Rasbora