Can Cardinal Tetra live with Red Tail Shark? Not recommended
Red Tail Shark is large or predatory enough to eat or harass Cardinal Tetra.
Side by side
| 🐟 Cardinal Tetra | 🦈 Red Tail Shark | |
| Adult size | 2" | 5" |
| Min tank | 15 gal | 55 gal |
| Temperature | 73–81°F | 72–79°F |
| pH | 4.5–6.5 | 6.5–7.5 |
| Temperament | Peaceful | Aggressive |
Why
- Red Tail Shark is large or predatory enough to eat or harass Cardinal Tetra.
- Aggressive plus peaceful pairing — monitor for stress.