Otocinclus vittatus

The otocinclus (Otocinclus vittatus) is a small peaceful catfish renowned for its consumption of algae and biofilm. Gregarious and discreet, it spends its days grazing on the surfaces of decor and plants. It reaches approximately 4 cm when adult.
It requires a mature and well-balanced aquarium of at least 60 liters, planted and rich in biofilm, with lighting that encourages slight algae development. The water should be soft to moderately hard and rather neutral (pH 6.0 to 7.5) between 22 and 27 °C, always very well oxygenated and stable. This sensitive fish does not tolerate nitrite spikes or fluctuating parameters.
A grazing herbivore, it feeds on green algae (notably brown diatom algae) and biofilm. In a tank that is too clean, supplement imperatively with spirulina pellets and blanched vegetables (zucchini, cucumber, spinach). Dietary deficiency is a common cause of decline.
Keep it imperatively in a group of at least six individuals for its well-being. Only introduce it into an aquarium that has been established for several weeks, allowing time for biofilm and algae to develop. It is an excellent ally against algae, provided you do not rely solely on these to feed it.
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Information provided for guidance only; it may vary between individuals and conditions. If in doubt about an animal's health, consult a vet.