Can Flowerhorn Live With Java Loach?
Flowerhorn and Java Loach are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 78–82°F.
pH
✓ Compatible
Good pH overlap at 6.5–7.0.
Size
⚠ Use Caution
Significant size difference (12" vs 3"). Flowerhorn may bully or stress Java Loach.
Temperament
✗ Not Compatible
Flowerhorn (aggressive) is not compatible with Java Loach (peaceful). Aggression or stress is very likely.
Swim Level
✓ Compatible
Fish occupy different water levels (Flowerhorn: middle, Java Loach: bottom), reducing conflict.
Trait Conflict
✗ Not Compatible
Flowerhorn is a predator and may eat Java Loach.
Important Notes
- Java Loach is a schooling fish and needs at least 5 of its kind.
Tank Requirements
Minimum tank size for this combination: 63 gallons
| Parameter | Flowerhorn | Java Loach |
|---|---|---|
| Temperature | 78–86°F | 72–82°F |
| pH | 6.5–7.5 | 5.5–7 |
| Max Size | 12" | 3" |
| Temperament | Aggressive | Peaceful |
| Swim Level | Middle | Bottom |
| Min Tank | 55 gal | 15 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.