Can harlequin rasboras and guppies live together?
Yes
Harlequin rasboras and guppies can share a tank. Their water needs overlap and neither is known to bother the other.
Why
- Their temperature and pH ranges overlap comfortably, and neither is known to nip, chase or eat the other.
What each one needs
| Harlequin rasbora | Guppy | Both | |
|---|---|---|---|
| Temperature | 72–80°F (22–27°C) | 72–82°F (22–28°C) | 72–80°F (22–27°C) |
| pH | 6.0–7.5 | 6.8–7.8 | 6.8–7.5 |
| Minimum tank | 10 gal (38 L) | 5 gal (19 L) | 10 gal (38 L) |
| Keep at least | 6 | 3 | |
| Adult size | 1.8 in (4.6 cm) | 2 in (5.1 cm) |
The smallest tank for both
A 20 gallons (76 L) tank holds 6 harlequin rasboras and 3 guppies at about 45% of its stocking limit, which leaves room for more.