Can Otocinclus Catfish Live With Bristlenose Pleco?
Otocinclus Catfish and Bristlenose Pleco are compatible. Temperature overlap 73–79°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
| Parameter | Otocinclus Catfish | Bristlenose Pleco | Overlap |
|---|---|---|---|
| Temperature | 72–79°F | 73–81°F | 73–79°F ✓ |
| pH Range | 6–7.5 | 6.5–7.5 | 6.5–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 5" | Similar ✓ |
| Min Tank Size | 10 gal | 20 gal | 20 gal minimum together |
| Diet | Herbivore | Omnivore | — |
| Care Level | intermediate | beginner | — |
Tank Requirements for Otocinclus Catfish + Bristlenose Pleco
To keep Otocinclus Catfish and Bristlenose Pleco together, you need at minimum a 20 gallon tank. Otocinclus Catfish should be kept in a school of 6+. Provide adequate filtration, stable temperature with a heater, and hiding spots to reduce stress.
Species Profiles
Otocinclus Catfish
Otocinclus spp.
Otocinclus catfish (otos) are tiny, peaceful algae eaters that are incredibly effective at controlling soft green algae and diatoms in planted tanks. They are the gold standard for planted tank algae control, often preferred over larger plecos. However, they are somewhat delicate and require established, well-maintained aquariums.
Full care guide →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 →