Can Cardinal Tetra live with Molly? With caution
Preferred water chemistry differs — manageable but not ideal.
Side by side
| 🐟 Cardinal Tetra | 🐠 Molly | |
| Adult size | 2" | 4.5" |
| Min tank | 15 gal | 20 gal |
| Temperature | 73–81°F | 72–82°F |
| pH | 4.5–6.5 | 7.5–8.5 |
| Temperament | Peaceful | Peaceful |
How to make it work
- Preferred water chemistry differs — manageable but not ideal.
- Provide ample swimming space, sight breaks, and matched water parameters.