Thanks guys
, I was leaning toward Crocea as well.
You are correct Rovert, it is around 1 1/2 inches long.
I also have a feeding question, having read that clams under 3 inches should be fed. I don't have any phytoplankton but am working on getting some, although not so easy in my country.
However in the mean time, most days I feed the tank some blended frozen food made to my own recipe, and the fine stuff clouds the tank for an hour or so. I allow this as the corals seem to like it. Would this feed the clam also? or does it HAVE to be phytoplankton?