Can Betta (male) live with Cardinal Tetra? With caution
Betta (male) may bully or stress the smaller Cardinal Tetra — provide space and cover.
Side by side
| 🐟 Betta (male) | 🐟 Cardinal Tetra | |
| Adult size | 2.8" | 2" |
| Min tank | 5 gal | 15 gal |
| Temperature | 76–82°F | 73–81°F |
| pH | 6–7.5 | 4.5–6.5 |
| Temperament | Aggressive | Peaceful |
Why
- Betta (male) may bully or stress the smaller Cardinal Tetra — provide space and cover.
- Aggressive plus peaceful pairing — monitor for stress.
How to make it work
- Betta (male) may bully or stress the smaller Cardinal Tetra — provide space and cover.
- Aggressive plus peaceful pairing — monitor for stress.
- Provide ample swimming space, sight breaks, and matched water parameters.