Applesnails can get to be the size of a baseball. A Mystery Snail might be a choice though, they stay around the size of a large gumball.
thank you...i had a pleco before in my 10 gal and it starved cause i didnt haVE ANY ALGAE..THEY WOULDNT EAT THE TABS EITHER. :fairy:TKOS said:Otto's can be kept alone. It is sometimes hard to train them to eat algae tabs or veggies like cucumber but some will. I would just wait until you have some decent algae in the tank and then let the little fellow loose.