Can guppies live with harlequin rasboras?
✅ Compatible Yes
- No conflicts found: temperature, pH, size, temperament and fin-nipping checks all pass.
| Guppy | Harlequin rasbora | |
| Temperature | 63–82 °F (17–28 °C) | 70–82 °F (21–28 °C) |
| pH | 7–8.5 | 5–7.5 |
| Adult size | 2.4 in (6 cm) | 2.0 in (5 cm) |
| Temperament | Peaceful | Peaceful |
| Swims in | Top | Middle |
| Minimum tank | 10 gal | 20 gal |
Shared temperature: 70–82 °F (21–28 °C) · Shared pH: 7–7.5
Tips if you keep them together
- Keep guppies in a group of at least 3.
- Keep harlequin rasboras in a group of at least 6.
- Use a tank of at least 20 US gallons with plenty of plants and hiding places.
- Set the heater around 76 °F (24.5 °C), the middle of the shared range.
See all guppy tank mates and harlequin rasbora tank mates, or add more species in the checker.
FAQ
Can guppies live with harlequin rasboras?
Yes. Guppies and harlequin rasboras share water conditions and temperament.
What temperature for guppies and harlequin rasboras?
Guppy: 63–82 °F (17–28 °C). Harlequin rasbora: 70–82 °F (21–28 °C). Shared range: 70–82 °F (21–28 °C).
What size tank for guppies and harlequin rasboras?
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.