Can Harlequin Rasbora Live With Royal Gramma?
❌Not Compatible
Incompatible pH. Harlequin Rasbora needs 6.0–7.5, Royal Gramma needs 8.1–8.4.
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Parameter Comparison
| Parameter | Harlequin Rasbora | Royal Gramma | Overlap |
|---|---|---|---|
| Temperature | 72–81°F | 75–79°F | 75–80°F ✓ |
| pH Range | 5.5–7 | 8.1–8.4 | No overlap ✗ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 3.1" | Similar ✓ |
| Min Tank Size | 11 gal | 30 gal | 20 gal minimum together |
| Diet | Omnivore | Carnivore | — |
| 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 →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 →Other Compatible Tank Mates
For Harlequin Rasbora:
For Royal Gramma:
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