Can Otocinclus Catfish Live With Angelfish?
Otocinclus Catfish and Angelfish may coexist with careful monitoring, adequate space, and hiding spots.
Conditions: Minimum 30 gallon tank.
Parameter Comparison
| Parameter | Otocinclus Catfish | Angelfish | Overlap |
|---|---|---|---|
| Temperature | 72–79°F | 76–84°F | 76–79°F ✓ |
| pH Range | 6–7.5 | 6–7.5 | 6–7.5 ✓ |
| Temperament | peaceful | semi-aggressive | Monitor ⚠ |
| Max Size | 2" | 6" | Similar ✓ |
| Min Tank Size | 10 gal | 30 gal | 30 gal minimum together |
| Diet | Herbivore | Omnivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Otocinclus Catfish + Angelfish
To keep Otocinclus Catfish and Angelfish together, you need at minimum a 30 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 →Angelfish
Pterophyllum scalare
Freshwater angelfish are elegant, tall-bodied cichlids that are a centerpiece in many community aquariums. They come in many color varieties including silver, marble, koi, and black. While generally peaceful, they become territorial when breeding and will eat small fish like neon tetras.
Full care guide →