
Is that the priness cichlid your lfs has? If so, it is an african cichlid, and a very aggressive, territorial one at that - definitely not what you're looking for (and not a shellie). Bolivian rams may seem a bit drab in the lfs, but when you get them home, they really come alive. They are a bit bigger than the blue rams and in general, are hardier and more disease resistant. Many lfs have a hard time getting hardy blue rams in due to overbreeding.
Kribs are not overly aggressive unless they are spawning.