Can Betta Fish Live With Otocinclus Catfish?
Betta Fish and Otocinclus Catfish are compatible. Temperature overlap 76–79°F.
Conditions: Minimum 10 gallon tank.
Parameter Comparison
| Parameter | Betta Fish | Otocinclus Catfish | Overlap |
|---|---|---|---|
| Temperature | 76–82°F | 72–79°F | 76–79°F ✓ |
| pH Range | 6.5–7.5 | 6–7.5 | 6.5–7.5 ✓ |
| Temperament | semi-aggressive | peaceful | Monitor ⚠ |
| Max Size | 3" | 2" | Similar ✓ |
| Min Tank Size | 5 gal | 10 gal | 10 gal minimum together |
| Diet | Carnivore | Herbivore | — |
| Care Level | beginner | intermediate | — |
Tank Requirements for Betta Fish + Otocinclus Catfish
To keep Betta Fish and Otocinclus Catfish together, you need at minimum a 10 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
Betta Fish
Betta splendens
The Betta fish (Siamese fighting fish) is one of the most popular freshwater aquarium fish in the world, known for its stunning flowing fins and vibrant colors. Males are territorial and should be kept alone or with carefully chosen tank mates. Despite their reputation as low-maintenance fish, bettas thrive best in heated, filtered tanks of at least 5 gallons.
Full care guide →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 →