Can Royal Gramma Live With Synodontis Catfish (Upside-Down)?
❌Not Compatible
Cannot coexist — Royal Gramma is saltwater, Synodontis Catfish is freshwater.
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Parameter Comparison
| Parameter | Royal Gramma | Synodontis Catfish (Upside-Down) | Overlap |
|---|---|---|---|
| Temperature | 75–79°F | 72–79°F | 75–80°F ✓ |
| pH Range | 8.1–8.4 | 6–7.5 | 8.1–8.4 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 3.1" | 3.9" | Similar ✓ |
| Min Tank Size | 30 gal | 20 gal | 30 gal minimum together |
| Diet | Carnivore | Omnivore | — |
| Care Level | beginner | beginner | — |
Species Profiles
Royal Gramma
Gramma loreto
beginnerpeaceful30+ gal
The Royal Gramma (Gramma loreto) is a beginner saltwater species known for its purple (front), yellow (rear) coloration. Purple/yellow bicolor. Bottom to 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 Royal Gramma:
For Synodontis Catfish (Upside-Down):
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