Hi, I haven't seen babysealclubber post anything in a while, so just in case he doesn't check regularly I thought I might chair this one.
The fish is called Pseudotropheus sp. "Elongatus Chewere", its on the more aggressive side of mbuna cichlids. I've only seen it available once in a shop here in Ireland and I was kicking myself that I didn't pick some up. But I'm sure that if you have an African cichlid stockist in your area that it would be possible for them to order some. Its worth a shot an its a fantastic looking fish!
Word of warning, Just be careful if you do get your hands on this fish, that you dont have similar looking male Pseudotropheus elongatus in your tank as this will lead to an aggression problem.