ow ya i am. in the spring i'm getting a 240 and the green terror 4", and the convicts are going in there and the oscars and jack are getting their own tank but i don't know what yet but it will be bigger. trust me. no he isn't trying to escape, their pretty much like a school. i guess i'm lucky. The tank is 6' running a sump and ac50. took make you guys feel better, I just test the water yesterday before my twice a week water change and nitrates are 5 or below. the most aggression, i have seen out of them is just once in a while a tail, flare and once in a blue moon a shove, then their done. the jack is 5", the male con is 4.5", female con 2.5", green terror is 4".