Can Royal Gramma Live With Silver Arowana?
❌Not Compatible
Incompatible pH. Royal Gramma needs 8.1–8.4, Silver Arowana needs 6.0–7.5.
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Parameter Comparison
| Parameter | Royal Gramma | Silver Arowana | Overlap |
|---|---|---|---|
| Temperature | 75–80°F | 75–82°F | 75–80°F ✓ |
| pH Range | 8.1–8.4 | 6–7.5 | No overlap ✗ |
| Temperament | peaceful | aggressive | Aggression risk ✗ |
| Max Size | 3" | 36" | Size mismatch ✗ |
| Min Tank Size | 20 gal | 125 gal | 125 gal minimum together |
| Diet | Carnivore | Carnivore | — |
| Care Level | beginner | advanced | — |
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 →Silver Arowana
Osteoglossum bicirrhosum
advancedaggressive125+ gal
The Silver Arowana (Osteoglossum bicirrhosum) is a advanced-level freshwater fish growing to 36 inches. Aggressive temperament, minimum 125 gallon tank.
Full care guide →Other Compatible Tank Mates
For Royal Gramma:
For Silver Arowana:
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