Can Harlequin Rasbora Live With Synodontis Catfish (Upside-Down)?
❌Not Compatible
Harlequin Rasbora and Synodontis Catfish are not compatible due to size mismatch or behavioral conflicts.
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Parameter Comparison
| Parameter | Harlequin Rasbora | Synodontis Catfish (Upside-Down) | Overlap |
|---|---|---|---|
| Temperature | 72–81°F | 72–79°F | 75–82°F ✓ |
| pH Range | 5.5–7 | 6–7.5 | 7.5–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 3.9" | Similar ✓ |
| Min Tank Size | 11 gal | 20 gal | 30 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | beginner | beginner | — |
Species Profiles
Harlequin Rasbora
Trigonostigma heteromorpha
beginnerpeaceful11+ gal
The Harlequin Rasbora (Trigonostigma heteromorpha) is a beginner freshwater species known for its orange-pink, black triangle coloration. Classic schooling fish. Mid.
Full care guide →Synodontis Catfish (Upside-Down)
Synodontis nigriventris
beginnerpeaceful20+ gal
The Synodontis Catfish (Upside-Down) (Synodontis nigriventris) is a beginner freshwater species known for its brown, dark mottled coloration. Swims upside down. Underside of surfaces.
Full care guide →Other Compatible Tank Mates
For Harlequin Rasbora:
For Synodontis Catfish (Upside-Down):
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