Can Harlequin Rasbora Live With Similis Shell Dweller?
Harlequin Rasbora and Similis Shell Dweller are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 76–82°F.
pH
✗ Not Compatible
No pH overlap. Harlequin Rasbora needs pH 6–7.5, but Similis Shell Dweller needs pH 7.8–9.
Size
✓ Compatible
Compatible sizes (2" and 1.5").
Temperament
⚠ Use Caution
Harlequin Rasbora (peaceful) may have issues with Similis Shell Dweller (semi-aggressive). Monitor closely if attempting.
Swim Level
✓ Compatible
Fish occupy different water levels (Harlequin Rasbora: middle, Similis Shell Dweller: bottom), reducing conflict.
Important Notes
- Harlequin Rasbora is a schooling fish and needs at least 6 of its kind.
- Similis Shell Dweller is a schooling fish and needs at least 4 of its kind.
Tank Requirements
Minimum tank size for this combination: 15 gallons
| Parameter | Harlequin Rasbora | Similis Shell Dweller |
|---|---|---|
| Temperature | 72–82°F | 76–82°F |
| pH | 6–7.5 | 7.8–9 |
| Max Size | 2" | 1.5" |
| Temperament | Peaceful | Semi-aggressive |
| Swim Level | Middle | Bottom |
| Min Tank | 10 gal | 10 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.