Here is a pretty nice looking sort of mushroom. It looks good, don't know what it is, but is there some sort of alge growing on the rock it's attached to?
Thanks for the help,
Joe
those are R. Yumas and the algea could be one of many. your fish and hermits will soon clear it up for ya. i do not think its gracilis algae but it might be is its already been mowed down. gracilis is nomaly longer like grass it is also not found in the same areas as the yuma
looks more like Acanthophora spicifera which would make more sence since it is found in the same areas as those yumas.