That was a typo lol they were in a 214 gallon 6foot longExcepting a longer term display tank (how many lfs do this anymore?), store tanks tend to be a unique circumstance; for a few reasons you can't always count on what you see there translating to your home tank.
I agree with Ryan that a 63 is on the small side for multiple sevs along with the other fish. Even in a larger tank, two may or may not get along with each other, depending on gender and on the individuals.