Can Jack Dempsey live with Molly? Not recommended
Jack Dempsey is large or predatory enough to eat or harass Molly.
Side by side
| 🐡 Jack Dempsey | 🐠 Molly | |
| Adult size | 10" | 4.5" |
| Min tank | 55 gal | 20 gal |
| Temperature | 72–86°F | 72–82°F |
| pH | 6.5–8 | 7.5–8.5 |
| Temperament | Aggressive | Peaceful |
Why
- Jack Dempsey is large or predatory enough to eat or harass Molly.
- Aggressive plus peaceful pairing — monitor for stress.