Hi, I have one of these now, and i know they are mean little buggers but are they gonna be a threat to anything in my 90gal signature tank do u think? If so I may just take him back, which i dont really want to do. He was pretty beaten around the mouth as he was in a tank with a breeding pair of Flowerhorns (the guy didnt know they had laid eggs) and a Jewell, so i felt sorry for it and really liked the look. Any thoughts welcome!!!