Can Cardinal Tetra live with Common Goldfish? Not recommended
Temperature ranges don't overlap (73–81°F vs 60–72°F).
Side by side
| 🐟 Cardinal Tetra | 🐠 Common Goldfish | |
| Adult size | 2" | 12" |
| Min tank | 15 gal | 40 gal |
| Temperature | 73–81°F | 60–72°F |
| pH | 4.5–6.5 | 6.5–8 |
| Temperament | Peaceful | Peaceful |
Why
- Temperature ranges don't overlap (73–81°F vs 60–72°F).
- Large size gap — watch that Common Goldfish doesn't bully Cardinal Tetra.