Can Oscar Live With Red Rainbowfish?
Oscar and Red Rainbowfish are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 74–80°F.
pH
✓ Compatible
Good pH overlap at 7.0–7.5.
Size
✓ Compatible
Compatible sizes (14" and 6").
Temperament
✗ Not Compatible
Oscar (aggressive) is not compatible with Red Rainbowfish (peaceful). Aggression or stress is very likely.
Swim Level
⚠ Use Caution
Both fish occupy the middle level and Oscar is territorial. Provide plenty of space and hiding spots.
Important Notes
- Red Rainbowfish is a schooling fish and needs at least 6 of its kind.
Tank Requirements
Minimum tank size for this combination: 103 gallons
| Parameter | Oscar | Red Rainbowfish |
|---|---|---|
| Temperature | 74–81°F | 72–80°F |
| pH | 6–7.5 | 7–8 |
| Max Size | 14" | 6" |
| Temperament | Aggressive | Peaceful |
| Swim Level | Middle | Middle |
| Min Tank | 75 gal | 55 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.