Even if im not out by then i used to own a female jag that was about 7-9 inches and she was housed with a oscar, midas, pacu, and jd for well over a year in a 55 until they were moved to a 75 then my friend offered me $150 for all my fish for his 300 gallon until the pacu died from jumping out of the tank. All other fish still in the tank and fine. Jag in 11 inches and mean. I figured the 55 would be fine for over year if i bout it and wanted to keep him in it. He will be the main fish along with the bichirs but hes the focus point of the tank. He will be about 1 1/2 inches to 2 inches when i get one from the lfs