While at the local pet shop discussing the return of my now aggressive adult angelfish, I asked about otos, since I had just spent the morning scrubbing my tank. The owner said that otos are too small to house with angels and suggested a dwarf pleco. I assumed all plecos grew too big for my tank but the owner assured me this dude will stay small. He also says it is good for algae. Now (a bit late) I read that clown plecos are super poopers, may kill my cories as he takes over the driftwood which he will eventually eat, and really isn't a very good algae eater. Well he is in my tank now (he has been disease free for some time at the shop so I put him in) and now I'm worried. Was this a foolish purchase?