Can goldfish live with guppies?
⚠️ Caution Sometimes, with care
- ⚠️ Caution An adult fancy goldfish (up to 20 cm) may try to eat smaller guppy (6 cm), especially at night.
- ⚠️ Caution Goldfish are coldwater fish that produce a lot of waste; they are usually kept only with other goldfish.
| Fancy goldfish | Guppy | |
| Temperature | 68–73 °F (20–23 °C) | 63–82 °F (17–28 °C) |
| pH | 7–8 | 7–8.5 |
| Adult size | 7.9 in (20 cm) | 2.4 in (6 cm) |
| Temperament | Peaceful | Peaceful |
| Swims in | All levels | Top |
| Minimum tank | 20 gal | 10 gal |
Shared temperature: 68–73 °F (20–23 °C) · Shared pH: 7–8
Tips if you keep them together
- Keep guppies in a group of at least 3.
- Use a tank of at least 20 US gallons with plenty of plants and hiding places.
- Set the heater around 71 °F (21.5 °C), the middle of the shared range.
See all fancy goldfish tank mates and guppy tank mates, or add more species in the checker.
FAQ
Can goldfish live with guppies?
Sometimes, with care. An adult fancy goldfish (up to 20 cm) may try to eat smaller guppy (6 cm), especially at night. Goldfish are coldwater fish that produce a lot of waste; they are usually kept only with other goldfish.
What temperature for goldfish and guppies?
Fancy goldfish: 68–73 °F (20–23 °C). Guppy: 63–82 °F (17–28 °C). Shared range: 68–73 °F (20–23 °C).
What size tank for goldfish and guppies?
At least 20 US gallons, more as you add fish.
Note: Compatibility depends on individual temperament, tank size, decor and how fish are introduced. Our verdicts use conservative rules applied to published care data (see methodology). They are guidance, not a guarantee. Quarantine new fish and watch for chasing, torn fins or hiding.