My tank is about three months old right now, the first fish I added was the flame Angel, then a dottyback, and a cardinal, which are all fine together. It's a 29 gallon cube. I however added the mandarin goby today and it's weird but is seems the flame is like backing it's *** up onto the gobys face lol best way to describe it. Anyone know what this could be? Here's a pic of my tank