I was looking up information on Pleco, and it said they could sometimes eat other fish smaller then it. I wanted to know how true that was, or if anyone has had any experience considering it. My Pleco is about 2 1/2 inches long, and I was thinking of putting it in my 5 gal tank next week with a Platy and female Betta fish (who are already in there). Also, how big do Plecos get? It's a smaller Pleco, not one of the huge ones. Also, do they eat everything at the bottom? Even other fish's waste?