carlurpa crab?

[canuckzilla]

Saw a tank full of Carlurpa Crabs at Big Al's today. Anyone heard of these before, know what the eat...etc.

I have a crab tank with refuges from my reef tank. My son loves them so I was wondering how hard carlurpa crabs were to keep. I was thinking of just feeding it my most valuable fish and rarest corals...that's what my other crabs like to eat. :-P