Can Royal Gramma Live With Glass Catfish?
❌Not Compatible
Incompatible pH. Royal Gramma needs 8.1–8.4, Glass Catfish needs 6.5–7.0.
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Parameter Comparison
| Parameter | Royal Gramma | Glass Catfish | Overlap |
|---|---|---|---|
| Temperature | 75–80°F | 75–80°F | 75–80°F ✓ |
| pH Range | 8.1–8.4 | 6.5–7 | No overlap ✗ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 3" | 5" | Similar ✓ |
| Min Tank Size | 20 gal | 20 gal | 20 gal minimum together |
| Diet | Carnivore | Carnivore | — |
| Care Level | beginner | intermediate | — |
Species Profiles
Royal Gramma
Gramma loreto
beginnerpeaceful20+ gal
The royal gramma is one of the most stunning and beginner-friendly saltwater fish. Its front half is vivid purple transitioning to bright yellow on the back — a color combination unmatched in the marine world. They are hardy, disease-resistant, reef-safe, and stay small. Often considered one of the top 3 beginner saltwater fish alongside clownfish and firefish.
Full care guide →Glass Catfish
Kryptopterus vitreolus
intermediatepeaceful20+ gal
The Glass Catfish (Kryptopterus vitreolus) is a intermediate-level freshwater fish growing to 5 inches. Peaceful temperament, minimum 20 gallon tank.
Full care guide →Other Compatible Tank Mates
For Royal Gramma:
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