Dwarf Sucker Catfish - Otocinclus - #32873

Add a peaceful and hardworking algae-eating fish to your freshwater aquarium with our Dwarf Sucker Catfish, commonly known as Otocinclus or Oto Catfish. These tiny catfish are known for their slender bodies, distinctive dark horizontal stripes, and excellent algae-grazing abilities, making them a popular choice for planted aquariums and peaceful community tanks.

Native to South America, Otocinclus Catfish spend much of their time grazing on soft algae and biofilm found on aquarium glass, plants, driftwood, and decorations. Their small size and gentle temperament make them especially popular among aquascaping enthusiasts looking for natural algae control without disturbing plants or other peaceful tank inhabitants.

Otocinclus thrive in mature, well-established aquariums with plenty of live plants, driftwood, hiding areas, and stable water conditions. They are social fish that do best in groups of six or more and should be housed with other peaceful community fish.

Although Otocinclus are excellent algae grazers, they require additional food to stay healthy. Their diet should include algae wafers, spirulina-based foods, and blanched vegetables such as zucchini or spinach. A well-established aquarium with natural algae and biofilm is especially important, as these fish can struggle to find enough food in newly established tanks.

Scientific Name: Otocinclus spp.
Common Name: Dwarf Sucker Catfish / Otocinclus / Oto Catfish
Adult Size: Approximately 1.5–2 Inches
Lifespan: Approximately 3–5 Years with Proper Care
Temperament: Peaceful, Social, and Gentle
Diet: Primarily Herbivorous / Algae and Biofilm Grazer
Water Temperature: Approximately 72–79°F
pH Range: Approximately 6.0–7.5
Recommended Tank Size: 20+ Gallons, Preferably Mature and Planted
Social Requirements: Best Kept in Groups of 6 or More
Activity Level: Active Grazer
Habitat: Established Freshwater Aquarium with Plants, Driftwood, and Natural Algae Growth
Care Level: Intermediate
Primary Purpose: Freshwater Community Aquarium Fish / Natural Algae Control

Otocinclus Catfish are an excellent choice for aquarium enthusiasts looking for a small, peaceful, and beneficial algae-grazing fish. Their gentle nature and constant grazing behavior make them a wonderful addition to established planted aquariums.

These fish are sensitive to sudden changes in water conditions and should be carefully acclimated to their new aquarium. They are not recommended for newly established tanks.

Fish are sold individually. Species, size, coloration, and availability may vary.

IMPORTANT: Live fish inventory changes frequently, and website stock quantities may not be accurate. Please call Curtis Country Store ahead of your visit to confirm availability.

Website listings are for viewing purposes only. All purchases must be made in-store at Curtis Country Store.