Can Otocinclus Catfish Live With Congo Tetra?
Otocinclus Catfish and Congo Tetra are compatible. Temperature overlap 73–79°F. Both peaceful.
Conditions: Minimum 30 gallon tank.
Parameter Comparison
| Parameter | Otocinclus Catfish | Congo Tetra | Overlap |
|---|---|---|---|
| Temperature | 72–79°F | 73–82°F | 73–79°F ✓ |
| pH Range | 6–7.5 | 6–7.5 | 6–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 3.5" | Similar ✓ |
| Min Tank Size | 10 gal | 30 gal | 30 gal minimum together |
| Diet | Herbivore | Omnivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Otocinclus Catfish + Congo Tetra
To keep Otocinclus Catfish and Congo Tetra together, you need at minimum a 30 gallon tank. Otocinclus Catfish should be kept in a school of 6+. Congo Tetra 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 →Congo Tetra
Phenacogrammus interruptus
Congo tetras are the showstoppers of the tetra family. Males develop spectacular flowing fins with an iridescent rainbow sheen that shifts from blue to gold to green under aquarium lighting. They are larger than most tetras (up to 3.5 inches) and need a spacious, well-planted tank to display their full beauty. Peaceful but shy — they thrive with calm tank mates.
Full care guide →