Can Molly live with Red Tail Shark? With caution
Aggressive plus peaceful pairing — monitor for stress.
Side by side
| 🐠 Molly | 🦈 Red Tail Shark | |
| Adult size | 4.5" | 5" |
| Min tank | 20 gal | 55 gal |
| Temperature | 72–82°F | 72–79°F |
| pH | 7.5–8.5 | 6.5–7.5 |
| Temperament | Peaceful | Aggressive |
How to make it work
- Aggressive plus peaceful pairing — monitor for stress.
- Provide ample swimming space, sight breaks, and matched water parameters.