Can Cardinal Tetra Live With Electric Blue Jack Dempsey?
Cardinal Tetra and Electric Blue Jack Dempsey CAN coexist, but with some risks. Careful setup and monitoring required.
Detailed Analysis
Temperature
✓ Compatible
Good temperature overlap at 74–84°F.
pH
✓ Compatible
Good pH overlap at 6.5–7.0.
Size
⚠ Use Caution
Significant size difference (8" vs 2"). Electric Blue Jack Dempsey may bully or stress Cardinal Tetra.
Temperament
⚠ Use Caution
Cardinal Tetra (peaceful) may have issues with Electric Blue Jack Dempsey (semi-aggressive). Monitor closely if attempting.
Swim Level
⚠ Use Caution
Both fish occupy the middle level and Electric Blue Jack Dempsey is territorial. Provide plenty of space and hiding spots.
Important Notes
- Cardinal Tetra is a schooling fish and needs at least 6 of its kind.
Tank Requirements
Minimum tank size for this combination: 55 gallons
| Parameter | Cardinal Tetra | Electric Blue Jack Dempsey |
|---|---|---|
| Temperature | 73–84°F | 74–84°F |
| pH | 5–7 | 6.5–7.5 |
| Max Size | 2" | 8" |
| Temperament | Peaceful | Semi-aggressive |
| Swim Level | Middle | Middle |
| Min Tank | 10 gal | 55 gal |
Check More Combinations
Use our compatibility checker to add more fish and plan your complete tank.