As others have said 125g is the recommended minimum, preferably with a tank depth of 2ft. I have seen specimens in the 16-18" region and a picture of one nearly 20". Whatever size he gets he will still appreciate the space of a 125g.
If you get a juvenile, in the first year you should see a growth rate of an inch a month, after that it slows down.
If you get a juvenile, in the first year you should see a growth rate of an inch a month, after that it slows down.
