I had a common pleco that had gotten it's butt kicked by cichlids, plucked both eyes out and tried biting off his tail. Tail grew back, eye sockets sealed over. But I had it in with 2 female and 1 male angelfish. I had the females separated by a divider. That smart stinking blind pleco figured out how to swim over the top of the divider to get to the other side and eat the females eggs when she would lay! It was about a 4" pleco at the time he was doing it. They amaze me with what they can do.