Well I've had my 55 gal tank and my pleco for over a year now. He's now up to about 12 inches and he really is getting too big for the tank. I have a friend that wants to buy him off me, so i'm most likely going to do that. My question is what can I get next to "do the job" of the pleco, such as another type of pleco or catfish? Thanks for any help/info!