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How to look after
Otocinclus affinis
Oto, Dwarf sucker catfish, Midget suckermouth catfish
Steindachner, 1877

(Other members of the genus Otocinclus)

ADULT SIZE: 5 cm

WATER CONDITIONS: Not critical

TEMPERATURE RANGE: 20-26 C

FOOD: Feed Otocinclus affinis a predominantly vegetarian diet

DISTRIBUTION: This species comes from Brazil

group of 6 otocinclus

Current price: $36.99
buy it now
Time left: 25d 14h 21m

AQUARIUM CARE: These very small catfish are an excellent addition to the aquarium. They are fairly hardy and will do a good job keeping the tank clear of unwanted algae. If there is no algae, some vegetable matter is greatfully received: cucumber, lettuce, blanched spinach etc.

Otos make good community fish, obviously avoiding too large or predatory species. Clean water is important, maintain water quality.

BREEDING: Substrate spawner, though rarely achieved in the aquarium

Have you bred Otocinclus affinis? Why not fill in a breeding questionaire?, or examine existing Otocinclus affinis breeding reports








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Fishkeeping Facts and Tips

A biotope aquarium is one that attempts to replicate the natural habitat of a particular species. These aquariums are often more staisfying for the owner, but will also keep the fish happier, allowing them to exhibit their natural behaviour and hopefully reproduce. See more about different biotopes here


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