yes, it is Cladiella spp (I checked Sprung's book) remember there are many different species under this one genus, so they all don't necessarily look the same.
common name: finger leather, colt coral, cauliflower coral, blushing coral
region: red sea, Indian Ocean, Western Pacific to Polynesia
description: brown polyps contrasting with strinkingly paler tissue. when the polyps are expanded the colony looks bushy and brown. when disturbed, the polyps contract and the colony blanches white. slippery, like a wet bar of soap
similar corals: Alcyonium, Sinularia
moderate to high lighting and water flow needs. moderate to high aggressiveness. hardy.
I have had them before and found they are similar in needs to most leather corals. they are hardy unless you subject them to sudden changes in water quality.