Can Bristlenose Pleco Live With Molly?
Bristlenose Pleco and Molly are compatible. Temperature overlap 73–81°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
| Parameter | Bristlenose Pleco | Molly | Overlap |
|---|---|---|---|
| Temperature | 73–81°F | 72–82°F | 73–81°F ✓ |
| pH Range | 6.5–7.5 | 7–8.5 | 7–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 5" | 4.5" | Similar ✓ |
| Min Tank Size | 20 gal | 20 gal | 20 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | beginner | beginner | — |
Tank Requirements for Bristlenose Pleco + Molly
To keep Bristlenose Pleco and Molly together, you need at minimum a 20 gallon tank. Molly should be kept in a school of 4+. Provide adequate filtration, stable temperature with a heater, and hiding spots to reduce stress.
Species Profiles
Bristlenose Pleco
Ancistrus spp.
The Bristlenose Pleco is the most popular pleco species for home aquariums, and for good reason — they stay small (4–5 inches vs 12–24 inches for common plecos), are excellent algae eaters, and are hardy and easy to care for. Males develop distinctive bristle-like growths on their nose, which is how they get their name.
Full care guide →Molly
Poecilia sphenops
Mollies are versatile livebearers that come in many varieties including black, dalmatian, balloon, and sailfin. They prefer hard, alkaline water and can even tolerate brackish conditions. They are active, personable fish that breed easily.
Full care guide →