Otocinclus Catfish – Peaceful Nano Algae Eater
The Otocinclus Catfish, commonly known as the Oto Cat, is a small, peaceful freshwater fish highly valued for its natural algae-grazing abilities. With its slender body, distinctive dark horizontal stripe, and gentle personality, this charming little catfish is an excellent addition to planted aquariums.
Known for grazing on soft algae and biofilm found on aquarium glass, plants, and decorations, Otocinclus help maintain a clean and healthy-looking aquatic environment without damaging delicate aquatic plants.
These social fish thrive in mature, well-established aquariums with stable water conditions, abundant natural grazing surfaces, and peaceful tankmates. Their small size and calm temperament make them especially popular among aquascaping enthusiasts.
An excellent choice for aquarists seeking a gentle, plant-safe algae eater for a beautiful freshwater aquarium.
Care Guide
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Parameter
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Details
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Scientific Name
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Otocinclus spp.
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Common Name
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Oto Cat / Otocinclus Catfish
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Origin
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South America
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Adult Size
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3–5 cm
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Temperature
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22–26°C
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pH
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6.0–7.5
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Minimum Tank Size
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60 L+ for a small group
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Diet
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Herbivorous grazer, soft algae, biofilm, algae wafers, vegetables
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Temperament
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Very peaceful
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Care Level
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Intermediate
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Group Size
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6+ recommended
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Lifespan
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Approximately 3–5 years
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