So my 125 is looking better and better! I started out with a firemouth I saved from a breeding pair that I had in my 55, and a baby jack Dempsey which I picked up at a LFS. I have recently acquired a Salvini and a couple of blue acara as well. I can see a pecking order forming (from the other side of the room) as they all tend to follow each other in a line around the tank. One thing I have noticed though is they all go into hiding when I am near the tank. Well, besides the jack who is quite curious and a little piggy at that. Anyhow, the salvini has found a spot between the flower pots and the blue acaras tend to stay in the rear of the tank behind the pots. The firemouth has his own cave that he likes to defend. I am assuming while they are getting used to their new digs they are going to be hiding a lot? I know I sound like a newbie asking this question, I've just always had jacks and Oscars that are very friendly. In my 55 my firemouths with their babies are more sociable. Oh, I also wanted to mention I moved a pair of convicts from the 55 to a 30 by themselves and they are much happier. Anyhow, thanks for replies in advance!