Join Date: Oct 2010
Location: Victoria, Australia
I had two otocinclus (had more but they both died) that I gave to my brother to have in his tank. I am babysitting his tank now, and because there is little to no algae I have been blanching zucchini and offering algae tablets daily.
Just remember otocinclus tend to only eat soft algae. They will not touch other types, and while you might have a lot of algae in your tank, only some of it may be palatable to them. Your otocinclus should never had a gaunt looking stomach. Because they have to constantly graze and can be reluctant to switch to other sources of food, they can easily starve at pet stores and in brand new set-ups.
If your otos don't look like they have a plump stomach at all times, it means they are not getting enough food. I have found that my brother's otos really like the New Life Spectrum brand of algae wafer. They are almost always eating them when I go past so they must taste good. Although you would have to make sure it was your otocinclus and not just your pleco feeding on the wafers.