Can Oscar Live With Upside Down Catfish?
Oscar and Upside Down Catfish are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 74–81°F.
pH
✓ Compatible
Good pH overlap at 6.0–7.5.
Size
⚠ Use Caution
Significant size difference (14" vs 4"). Oscar may bully or stress Upside Down Catfish.
Temperament
✗ Not Compatible
Oscar (aggressive) is not compatible with Upside Down Catfish (peaceful). Aggression or stress is very likely.
Swim Level
✓ Compatible
Swim level compatibility is fine.
Trait Conflict
✗ Not Compatible
Oscar is a predator and may eat Upside Down Catfish.
Tank Requirements
Minimum tank size for this combination: 85 gallons
| Parameter | Oscar | Upside Down Catfish |
|---|---|---|
| Temperature | 74–81°F | 72–82°F |
| pH | 6–7.5 | 6–7.5 |
| Max Size | 14" | 4" |
| Temperament | Aggressive | Peaceful |
| Swim Level | Middle | All |
| Min Tank | 75 gal | 20 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.