Thanks for the defense sweety, it is a male thats why i said i wanted it around 11 feet if it was a female id expect to get in the 18-20's range. And actually the rule is true for goldfish, they wont outgrow their tank and theyll do just fine if taken care of properly, and i know this from experience. And i said i was AIMING for 11 feet it he acts irritable and needs to be fed more i will feed him more.