Can neon tetras and fancy goldfish live together?
With care
Neon tetras and fancy goldfish can share a tank, but there is something to watch.
Why
- Their pH ranges only meet at 7.0, which leaves no margin.
- An adult fancy goldfish is big enough to eat neon tetras.
What each one needs
| Neon tetra | Fancy goldfish | Both | |
|---|---|---|---|
| Temperature | 70–81°F (21–27°C) | 65–72°F (18–22°C) | 70–72°F (21–22°C) |
| pH | 6.0–7.0 | 7.0–8.0 | 7.0–7.0 |
| Minimum tank | 10 gal (38 L) | 20 gal (76 L) | 20 gal (76 L) |
| Keep at least | 6 | 1 | |
| Adult size | 1.5 in (3.8 cm) | 7 in (17.8 cm) |
The smallest tank for both
A 29 gallons (110 L) tank holds 6 neon tetras and 1 fancy goldfish at about 68% of its stocking limit, which leaves room for more.