Can Cardinal Tetra Live With Royal Gramma?
❌Not Compatible
Incompatible pH. Cardinal Tetra needs 4.5–7.0, Royal Gramma needs 8.1–8.4.
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Parameter Comparison
| Parameter | Cardinal Tetra | Royal Gramma | Overlap |
|---|---|---|---|
| Temperature | 73–81°F | 75–79°F | 75–80°F ✓ |
| pH Range | 4.5–6.5 | 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
Cardinal Tetra
Paracheirodon axelrodi
beginnerpeaceful11+ gal
The Cardinal Tetra (Paracheirodon axelrodi) is a beginner freshwater species known for its blue, red coloration. Brighter color than neon tetra. Mid to Lower-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 Cardinal Tetra:
For Royal Gramma:
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