I'm with you on this, Malefic. I still don't recommend ever mixing plecos with aggressive fish because of their "armor".Carefull with the cichlid tank. Some more agressive cichlids will tear the eyes out of a pleco's head. They can't really defend against that. Also, red belly piranah have been known to blind them, then flip them over to eat the soft belly. So keep an eye on your plec, armor does'nt promise saftey with some other types of fish.