Can Discus live with Red Tail Shark? Not recommended
Temperature ranges don't overlap (82–88°F vs 72–79°F).
Side by side
| 🐡 Discus | 🦈 Red Tail Shark | |
| Adult size | 6" | 5" |
| Min tank | 55 gal | 55 gal |
| Temperature | 82–88°F | 72–79°F |
| pH | 6–7 | 6.5–7.5 |
| Temperament | Peaceful | Aggressive |
Why
- Temperature ranges don't overlap (82–88°F vs 72–79°F).
- Aggressive plus peaceful pairing — monitor for stress.