So I made a post a while back about my otos dying randomly. I have a lone survivor... I have been monitoring the oto for a while now since the incident with the other 3. I know I have algae in the tank. The outbreak is pretty bad. I heard they eat diatoms mainly, but the tank doesn't have that anymore. How would I know or what would I feed the oto to make sure he/she is satisfied? I tried cucumbers, algae wafers, and zucchini and neer seems to be of interest. The other 3 that died however would grave on the zucchini or wafers. This one is starting to look skinny again and I don't want lose him/her. Any tips?