assuming your tank is a standard 150 gallon 72 1/2 x 18 1/2 x 28 1/2, are you sure he is 3 feet? if your correct, that would mean there is no way in hell he is able to turn around unless he went nearly straight up and down. i really dont see how he's 3 feet, especially in comparison to your oscars and decorations. we just sold about a 2' long one at the store for about 90 bucks just so he would sell. yours seems a bit overpriced, no offense. you probably wont be able to sell him too quickly for $200 though, sorry.