Can Oscar Live With Ruby Tetra?
Oscar and Ruby Tetra are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 74–81°F.
pH
✓ Compatible
Good pH overlap at 6.0–7.0.
Size
✗ Not Compatible
Extreme size difference. Oscar (14") may eat or bully Ruby Tetra (0.7").
Temperament
✗ Not Compatible
Oscar (aggressive) is not compatible with Ruby Tetra (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.
Trait Conflict
✗ Not Compatible
Oscar is a predator and may eat Ruby Tetra.
Important Notes
- Ruby Tetra is a schooling fish and needs at least 8 of its kind.
Tank Requirements
Minimum tank size for this combination: 78 gallons
| Parameter | Oscar | Ruby Tetra |
|---|---|---|
| Temperature | 74–81°F | 68–82°F |
| pH | 6–7.5 | 5–7 |
| Max Size | 14" | 0.7" |
| Temperament | Aggressive | Peaceful |
| Swim Level | Middle | Middle |
| Min Tank | 75 gal | 5 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.