Interesting never heard of those (atleast never noticed them at an lfs). They dont look very colorfull to me though, atleast with the first few sites that poped up on google. I was orignally thinking a small school of balas, but they just get so big... even a 240 might not be enough for clowns and balas. So I started thinking pearls instead. Still lots of fish in the sea though
(I've been told that a few times lol).