Can Royal Gramma Live With Celestial Pearl Danio?
Incompatible pH. Royal Gramma needs 8.1–8.4, Celestial Pearl Danio needs 6.5–7.5.
Parameter Comparison
| Parameter | Royal Gramma | Celestial Pearl Danio | Overlap |
|---|---|---|---|
| Temperature | 75–80°F | 72–78°F | 75–78°F ✓ |
| pH Range | 8.1–8.4 | 6.5–7.5 | No overlap ✗ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 3" | 1" | Similar ✓ |
| Min Tank Size | 20 gal | 10 gal | 20 gal minimum together |
| Diet | Carnivore | Omnivore | — |
| Care Level | beginner | beginner | — |
Species Profiles
Royal Gramma
Gramma loreto
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 →Celestial Pearl Danio
Danio margaritatus
Celestial pearl danios (also called galaxy rasboras) are tiny, jewel-like fish discovered in Myanmar in 2006. Their dark blue body is covered in iridescent pearl-white spots, with bright orange-red fins striped with black. Despite their exotic appearance, they are hardy and easy to care for — one of the hobby's best-kept secrets for nano tanks.
Full care guide →