Can Otocinclus Catfish Live With Ocellaris Clownfish?
Incompatible pH. Otocinclus Catfish needs 6.0–7.5, Ocellaris Clownfish needs 8.0–8.4.
Parameter Comparison
| Parameter | Otocinclus Catfish | Ocellaris Clownfish | Overlap |
|---|---|---|---|
| Temperature | 72–79°F | 75–82°F | 75–79°F ✓ |
| pH Range | 6–7.5 | 8–8.4 | No overlap ✗ |
| Temperament | peaceful | semi-aggressive | Monitor ⚠ |
| Max Size | 2" | 3.5" | Similar ✓ |
| Min Tank Size | 10 gal | 20 gal | 20 gal minimum together |
| Diet | Herbivore | Omnivore | — |
| Care Level | intermediate | beginner | — |
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 →Ocellaris Clownfish
Amphiprion ocellaris
The ocellaris clownfish — star of Finding Nemo — is the most popular saltwater aquarium fish and one of the best choices for beginner reef keepers. Captive-bred specimens are hardy, readily available, and don't require an anemone host (though they will happily adopt one). They are one of the few marine fish that breed regularly in home aquariums.
Full care guide →