Can guppies and fancy goldfish live together?
With care
Guppies and fancy goldfish can share a tank, but there is something to watch.
Why
- Their temperature ranges only meet at 72°F (22°C), which leaves no margin.
- Goldfish are slow, messy, cold-water fish. They do best in a tank with other goldfish.
What each one needs
| Guppy | Fancy goldfish | Both | |
|---|---|---|---|
| Temperature | 72–82°F (22–28°C) | 65–72°F (18–22°C) | 72–72°F (22–22°C) |
| pH | 6.8–7.8 | 7.0–8.0 | 7.0–7.8 |
| Minimum tank | 5 gal (19 L) | 20 gal (76 L) | 20 gal (76 L) |
| Keep at least | 3 | 1 | |
| Adult size | 2 in (5.1 cm) | 7 in (17.8 cm) |
The smallest tank for both
A 29 gallons (110 L) tank holds 3 guppies and 1 fancy goldfish at about 62% of its stocking limit, which leaves room for more.