Otocinclus Catfish

A small, peaceful grazing catfish suited to established planted aquariums. Otocinclus usually remain around 4–5 cm and spend much of their time browsing leaves, glass, and smooth surfaces.

Aquarium and care

Keep a social group of at least six in a fully cycled, mature aquarium with natural algae and biofilm. Provide plants, gentle circulation, good oxygenation, and shelter. Stable water quality matters more than chasing exact readings; avoid introducing them to a newly set up, spotless tank.

Feeding

Supplement natural grazing with suitable algae-based foods and softened vegetables. Check that every fish is actually feeding; algae alone may not meet the needs of the group.

Temperament and tank mates

Best with small peaceful fish and shrimp. Avoid aggressive fish and competitors that prevent them from feeding.

Buying information

Choose from the current size and purchase options shown on this page. Listed sale sizes describe the fish or livestock supplied, not its adult size. Photographs show representative appearance; individual color, markings, and development can vary.