NativeFishKeeper;4784194; said:They dont really jump from 3 or 4 inches to 2 feet ovenite, I caught mine at about 6 inches about a year ago, he eats all he wants, hides mostly, and has only seemed to grow maybe an inch or 2 since i caught him. Is in great health, and looks fabulous. So i wouldnt be afraid to start one in a 55 gal or so, it will be fine there for quite awhile, before it needs bigger accomodations.
Something is extremely strange here. Are you certain that you did not catch some sort of dwarf snakehead? I got six bowfin in mid June of 2010 around half the size of yours or less. I lost two to predation, one to jumping through the 1X1" mesh cover over my deck pond early. The fourth died a couple of months ago and mesured at 13". Both of the survivors are well over a foot long in under 6 months!