Can Kribensis Live With Ruby Tetra?
Kribensis and Ruby Tetra are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 75–82°F.
pH
✓ Compatible
Good pH overlap at 6.0–7.0.
Size
✗ Not Compatible
Extreme size difference. Kribensis (4") may eat or bully Ruby Tetra (0.7").
Temperament
⚠ Use Caution
Kribensis (semi-aggressive) may have issues with Ruby Tetra (peaceful). Monitor closely if attempting.
Swim Level
✓ Compatible
Fish occupy different water levels (Kribensis: bottom, Ruby Tetra: middle), reducing conflict.
Important Notes
- Ruby Tetra is a schooling fish and needs at least 8 of its kind.
Tank Requirements
Minimum tank size for this combination: 23 gallons
| Parameter | Kribensis | Ruby Tetra |
|---|---|---|
| Temperature | 75–82°F | 68–82°F |
| pH | 6–7.5 | 5–7 |
| Max Size | 4" | 0.7" |
| Temperament | Semi-aggressive | Peaceful |
| Swim Level | Bottom | Middle |
| Min Tank | 20 gal | 5 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.