I have been wanting a polleni for quite some time now and since I've recently upgraded my tank I was hoping I can finally pick one up but I'm having a hard time figuring out where they fall in terms of aggression. The tank is a 72"*30"*25" 225 wide with some plants and a piece of drift wood, I can pick up some rocks and make a cave if it will help my chances. Stock is 3 sd, common pleco, paraneetroplus melanurus, green sev, rotkeil, bellycrawler and 4 acarychthis heckelli. Sounds like a lot of people feel they're all bark and no bite but they have been keeping them in 4' tanks so I'm not sure if they are going to be a tad too fiesty or not.