Can Harlequin Rasbora Live With Threadfin Acara?
Harlequin Rasbora and Threadfin Acara CAN coexist, but with some risks. Careful setup and monitoring required.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 76–82°F.
pH
✓ Compatible
Good pH overlap at 6.0–7.5.
Size
⚠ Use Caution
Significant size difference (8" vs 2"). Threadfin Acara may bully or stress Harlequin Rasbora.
Temperament
⚠ Use Caution
Harlequin Rasbora (peaceful) may have issues with Threadfin Acara (semi-aggressive). Monitor closely if attempting.
Swim Level
✓ Compatible
Fish occupy different water levels (Harlequin Rasbora: middle, Threadfin Acara: bottom), reducing conflict.
Important Notes
- Harlequin Rasbora is a schooling fish and needs at least 6 of its kind.
Tank Requirements
Minimum tank size for this combination: 55 gallons
| Parameter | Harlequin Rasbora | Threadfin Acara |
|---|---|---|
| Temperature | 72–82°F | 76–84°F |
| pH | 6–7.5 | 5.5–7.5 |
| Max Size | 2" | 8" |
| Temperament | Peaceful | Semi-aggressive |
| Swim Level | Middle | Bottom |
| Min Tank | 10 gal | 55 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.