Can harlequin rasboras and bristlenose plecos live together?
Yes
Harlequin rasboras and bristlenose plecos 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 | Bristlenose pleco | Both | |
|---|---|---|---|
| Temperature | 72–80°F (22–27°C) | 73–81°F (23–27°C) | 73–80°F (23–27°C) |
| pH | 6.0–7.5 | 6.5–7.5 | 6.5–7.5 |
| Minimum tank | 10 gal (38 L) | 29 gal (110 L) | 29 gal (110 L) |
| Keep at least | 6 | 1 | |
| Adult size | 1.8 in (4.6 cm) | 5 in (12.7 cm) |
The smallest tank for both
A 29 gallons (110 L) tank holds 6 harlequin rasboras and 1 bristlenose pleco at about 38% of its stocking limit, which leaves room for more.