My LFS has 65% off fish this weekend and I want to pick up a pleco for my 50 gal Mbuna tank. There is nothing I consider "mean" in the tank now; Yellow Labs and Princess. I dont want anything that gets big. Under 5" or so would be nice. I know they have Rubber Mouth, Royal, Clown for sure. What do you think I should look for. Also, they dont have any Brushy in stock.