sorry, but your profile shows a 20 gallon, so it was easier for all of us to assume you meant a 20, but the fact remains that they get 8-9 feet, and some even up to 14 feet in the wild, so even a 200 isn't enough for the poor thing, and most of us don't advocate putting a fish in for now, just to get rid of it in a couple of years, especially these things, because once he outgrows your tank, then what, the zoos really don't want them, because they are getting too many for this reason