Can Forktail Rainbowfish Live With Red Devil?
Forktail Rainbowfish and Red Devil are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 75–80°F.
pH
✓ Compatible
Good pH overlap at 6.5–7.5.
Size
✗ Not Compatible
Extreme size difference. Red Devil (12") may eat or bully Forktail Rainbowfish (2").
Temperament
✗ Not Compatible
Forktail Rainbowfish (peaceful) is not compatible with Red Devil (aggressive). Aggression or stress is very likely.
Swim Level
✓ Compatible
Fish occupy different water levels (Forktail Rainbowfish: top, Red Devil: middle), reducing conflict.
Trait Conflict
✗ Not Compatible
Red Devil is a predator and may eat Forktail Rainbowfish.
Important Notes
- Forktail Rainbowfish is a schooling fish and needs at least 6 of its kind.
Tank Requirements
Minimum tank size for this combination: 55 gallons
| Parameter | Forktail Rainbowfish | Red Devil |
|---|---|---|
| Temperature | 73–80°F | 75–82°F |
| pH | 6.5–7.5 | 6.5–7.5 |
| Max Size | 2" | 12" |
| Temperament | Peaceful | 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.