I just stocked my 55. It has an 8"" JD who is EXTREMELY passive, a 2" con who has lived with the JD his whole life, and 2 new fish, a 1.5" Texas, and a 1.5" Blue Acara. The last 2 are gifts from my girlfriend, and I couldn't say no, so I threw them in. The texas and the BA locked jaws for a minute, but for the past three days, all has been well. Am I playing with gasoline?