If your aquarium has an adequate supply of algae, Otocinclus may not require daily feeding. However, supplemental feeding becomes necessary once the natural algae levels are depleted. In such cases, daily feeding works well for Otos, given their continuous grazing behavior.
For their diet, you can provide algae wafers, sinking pellets, blanched vegetables like cucumbers or zucchini, and sometimes even fruits like apples. Regular monitoring of eating habits and adjusting the feeding frequency and quantity based on their consumption can help ensure your Otos stay healthy and well-fed.