First let me state that I am very very new to marine aquaria and I appologize for any newb questions. I am interested in keeping a few clams when my new 180 is stable enough to do so. My question is what is everyones opinion on Hippopus clams. I have only ever seen one locally it was gold with tan lines. Are these a fairly common type clam? Common coloration? Good clam for a newbie? Thanks for humoring me.