Otocinclus
Otocinclus are best known as algae eaters. Care for them is relatively easy. They can grow to be about 1 1/2 – 2 inches when fully mature. Because Otocinclus Catfish size is small, they are very quick fish, being able to dart from one end of the tank to another in a flash. Otocinclus food can also include supplements such as algae wafers and even some fresh vegetables like green zucchini slices.