Can Oscar Live With Silver Hatchetfish?
Oscar and Silver Hatchetfish 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 Silver Hatchetfish (2.5").
Temperament
✗ Not Compatible
Oscar (aggressive) is not compatible with Silver Hatchetfish (peaceful). Aggression or stress is very likely.
Swim Level
✓ Compatible
Fish occupy different water levels (Oscar: middle, Silver Hatchetfish: top), reducing conflict.
Trait Conflict
✗ Not Compatible
Oscar is a predator and may eat Silver Hatchetfish.
Important Notes
- Silver Hatchetfish is a schooling fish and needs at least 6 of its kind.
Tank Requirements
Minimum tank size for this combination: 85 gallons
| Parameter | Oscar | Silver Hatchetfish |
|---|---|---|
| Temperature | 74–81°F | 74–83°F |
| pH | 6–7.5 | 5.5–7 |
| Max Size | 14" | 2.5" |
| Temperament | Aggressive | Peaceful |
| Swim Level | Middle | Top |
| Min Tank | 75 gal | 20 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.