Can Cardinal Tetra live with Jack Dempsey? Not recommended
Jack Dempsey is large or predatory enough to eat or harass Cardinal Tetra.
Side by side
| 🐟 Cardinal Tetra | 🐡 Jack Dempsey | |
| Adult size | 2" | 10" |
| Min tank | 15 gal | 55 gal |
| Temperature | 73–81°F | 72–86°F |
| pH | 4.5–6.5 | 6.5–8 |
| Temperament | Peaceful | Aggressive |
Why
- Jack Dempsey is large or predatory enough to eat or harass Cardinal Tetra.
- Aggressive plus peaceful pairing — monitor for stress.