Otocinclus affinis is a small algae eater with a black stripe. Otocinclus are highly sought after fish that are useful in almost any aquarium. In an aquarium from 60cm they can be kept in a small group. Once accustomed, they will quickly feel at home in the aquarium.
This dwarf algae eater likes to hang on windows or graze flat surfaces. In this way they also keep leaves free of algae. They can be kept at a pH of 5.5 - 7.5 and a temperature between 21 and 26°C.
Appearance
Otocinclus have a light, white-gray base color with a black stripe over the entire body. Adult specimens reach a length of 5cm. Females grow slightly larger and broader, but the sex distinction is difficult to see. They have a submissive mouth. From this it can be deduced that they eat their food from the bottom. Their abdomen, together with the pectoral fins, is shaped in such a way that they can hold on well. Even with strong currents.
Housing
These fish are easy to keep and don't need much. The aquarium must be at least 60 liters in size. Shelters and shade areas are highly appreciated. This can be in the form of plants, wood, stones or other crevices that they can crawl between. Plants in their environment will make them feel safe.
Behavior and fellow residents
Otocinclus are true group animals. They use the presence of others of their own kind for a sense of security. They often hang together on the window or explore the aquarium. So preferably always keep more than 6 copies together. They are almost constantly searching for food. Everything they crawl over is grazed. They do not interfere with other fish and are very peaceful. They can therefore be kept with all other aquarium animals without any problems. Preferably not with fish that are too large.
Power supply
As mentioned, Otocinclus are continuously searching surfaces. Algae and other edible substances from the biofilm are eaten. They leave plants alone. Of course, additional feeding can't hurt. This can be done with algae tablets or other granules that sink to the bottom.
Breeding these fish is very difficult. There are some breeding reports, but it is reserved for specialists.
The fish are wild caught. Before they arrive at the aquarium, they have already been captured, packed and transferred numerous times. This is a stressful time for the animals. They are not always fed properly and their condition is not always optimal. We would like to advise these fish to get used to with extra care and patience. Also give them enough resources to strengthen. For example with ADA Vitamix or Oase Vitamins and trace elements.
