Can Gardneri Killifish Live With Red Devil?
Gardneri Killifish and Red Devil are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 75–79°F.
pH
✓ Compatible
Good pH overlap at 6.5–7.5.
Size
⚠ Use Caution
Significant size difference (12" vs 2.5"). Red Devil may bully or stress Gardneri Killifish.
Temperament
✗ Not Compatible
Gardneri Killifish (semi-aggressive) is not compatible with Red Devil (aggressive). Aggression or stress is very likely.
Swim Level
✓ Compatible
Fish occupy different water levels (Gardneri Killifish: top, Red Devil: middle), reducing conflict.
Trait Conflict
✗ Not Compatible
Red Devil is a predator and may eat Gardneri Killifish.
Tank Requirements
Minimum tank size for this combination: 55 gallons
| Parameter | Gardneri Killifish | Red Devil |
|---|---|---|
| Temperature | 72–79°F | 75–82°F |
| pH | 6–7.5 | 6.5–7.5 |
| Max Size | 2.5" | 12" |
| Temperament | Semi-aggressive | Aggressive |
| Swim Level | Top | Middle |
| Min Tank | 10 gal | 55 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.