AWWW. Paintdrop/almost symmetrical spots A moderate grower, will grow his belly out before his length, golf ball with a tail instead of a more streamlined fish body.
Look at number 2, Chomper on this thread. http://www.**************.com/forum/viewtopic.php?f=21&t=24283&sid=abaf5635c323a3372c59988c8b96b386
I don't know how long you have had yours but it took one of mine the better part of a year to get his belly into the golfball.
After that, I am not sure how long it will take until 6 inches, probably another year or so. Will go from golf ball to tennis ball lol
Just my opinion, not scientific fact!