Can Blue Acara live with Cardinal Tetra? With caution
Large size gap — watch that Blue Acara doesn't bully Cardinal Tetra.
Side by side
| 🐡 Blue Acara | 🐟 Cardinal Tetra | |
| Adult size | 6.5" | 2" |
| Min tank | 40 gal | 15 gal |
| Temperature | 72–82°F | 73–81°F |
| pH | 6.5–8 | 4.5–6.5 |
| Temperament | Semi-aggressive | Peaceful |
How to make it work
- Large size gap — watch that Blue Acara doesn't bully Cardinal Tetra.
- Provide ample swimming space, sight breaks, and matched water parameters.