alright, i was growing out this fish for a buddy of mine in my 125, but now that i have gotten attached to "King Midas" i am thinking of keeping him, however, i cant unless i put him in a tank of his own. i dont think he will get along with the 2 oscars, jag, and GT. so what size should i get, i have a 55 sitting around, but for a fish that can get up to 16 inches im sure this is too small.