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Product Details


3cm - 3cm

Care Level




PH Level

6 - 7.5

Hardworking algae scrubbers!

Introducing Otocinclus affinis, also known as the Dwarf Suckermouth Catfish or Oto Catfish, a popular choice for aquarists seeking an effective and attractive algae eater. These small and peaceful catfish are not only charming to observe but also serve a practical purpose in maintaining a clean and healthy aquarium. With their efficient algae consumption and compatibility with a variety of tank mates, Otocinclus affinis is an ideal addition to any freshwater aquarium.

Detailed Description:

  • Appearance: Otocinclus affinis has a sleek and slender body with a vibrant silver coloration. They are characterized by a black stripe that runs from their eyes to their tail, adding a distinctive touch to their appearance. These catfish have a sucker-like mouth, which they use to attach themselves to surfaces in search of algae.

  • Size and Compatibility: Otocinclus affinis typically grows to a size of around 3 centimeters, making them a compact and manageable addition to the aquarium. They are peaceful and non-aggressive, making them compatible with a wide range of community fish, shrimp, and other peaceful invertebrates.

  • Water Conditions: Otocinclus affinis thrives in freshwater aquariums with stable water parameters. They prefer a temperature range of 72-78°F (22-26°C) and a pH level of 6.5 to 7.5. Adequate filtration and regular water changes are essential to maintain optimal water quality for their well-being.

  • Diet and Feeding: These catfish are primarily herbivores and specialize in consuming various types of algae, including diatoms and soft green algae. While they primarily feed on algae in the aquarium, it is important to supplement their diet with algae-based sinking pellets or wafers. Fresh blanched vegetables like zucchini or spinach can also be offered as occasional treats.

  • Behavior and Care: Otocinclus affinis is a peaceful and social species that should be kept in groups of at least five individuals to ensure their well-being. They are active during the day and spend their time grazing on algae-covered surfaces. Providing them with plenty of hiding places, such as driftwood or plants, helps create a secure and stimulating environment for them.

  • Tank Requirements: A well-planted aquarium with plenty of hiding spots and surfaces for algae growth is ideal for Otocinclus affinis. They appreciate a peaceful and low-stress environment, so avoid keeping them with aggressive or fin-nipping fish. Ensure the tank has a secure lid or cover to prevent any potential escapes.

  • Benefits: Otocinclus affinis offers several benefits to the aquarium ecosystem. Their voracious appetite for algae helps control its growth, reducing the need for excessive manual cleaning. Additionally, their small size and peaceful nature make them an excellent choice for community tanks, where they contribute to a balanced and harmonious environment.

With their algae-eating prowess and peaceful demeanor, Otocinclus affinis is a valuable addition to any freshwater aquarium. Not only do they contribute to the aesthetics of the tank, but they also play a crucial role in maintaining a clean and algae-free environment. Enjoy the beauty and practicality of these delightful catfish in your own aquatic oasis.

Otocinclus affinis 3cm (5pcs)

SGD 11.00

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Aquarium Fishes, Tanks & Supplies From FishList by DesmondLim Teck Whye

Suitable Tank Mates for Otocinclus affinis 3cm (5pcs)