Can Common Goldfish live with Congo Tetra? Not recommended
Temperature ranges don't overlap (73–82°F vs 60–72°F).
Side by side
| 🐠 Common Goldfish | 🐟 Congo Tetra | |
| Adult size | 12" | 3" |
| Min tank | 40 gal | 30 gal |
| Temperature | 60–72°F | 73–82°F |
| pH | 6.5–8 | 6–7.5 |
| Temperament | Peaceful | Peaceful |
Why
- Temperature ranges don't overlap (73–82°F vs 60–72°F).
- Large size gap — watch that Common Goldfish doesn't bully Congo Tetra.