I have one and kept it in a 150 for about eight months. I did have good filtration and fed quite a bit but if care is taken not to over feed I don't see why it could not make it a year in a tank that size. My guy now lives in an 8' round pond at about 700 gal till I get around to making a bigger tank. He did grow from 6" to 22" in eight months! Something to think about.
. Pics of tanks? please