Can Cardinal Tetra Live With Paradise Fish?
Cardinal Tetra and Paradise Fish are NOT compatible tank mates.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 73–79°F.
pH
✓ Compatible
Good pH overlap at 6.0–7.0.
Size
✓ Compatible
Compatible sizes (2" and 4").
Temperament
✗ Not Compatible
Cardinal Tetra (peaceful) is not compatible with Paradise Fish (aggressive). Aggression or stress is very likely.
Swim Level
✓ Compatible
Fish occupy different water levels (Cardinal Tetra: middle, Paradise Fish: top), reducing conflict.
Important Notes
- Cardinal Tetra is a schooling fish and needs at least 6 of its kind.
Tank Requirements
Minimum tank size for this combination: 20 gallons
| Parameter | Cardinal Tetra | Paradise Fish |
|---|---|---|
| Temperature | 73–84°F | 61–79°F |
| pH | 5–7 | 6–8 |
| Max Size | 2" | 4" |
| Temperament | Peaceful | Aggressive |
| Swim Level | Middle | Top |
| Min Tank | 10 gal | 20 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.