Can someone please tell me what this is. Appeared in my tank beneath dark area of live rock. 90 gal saltwater tank with only foxface, yellow tang, two breading pair clowns, sea urchin, cardinal, some red leg crab -shelled , coco worm (feather duster). This picture is magnified....
Can someone please tell me what this is. Appeared in my tank beneath dark area of live rock. 90 gal saltwater tank with only foxface, yellow tang, two breading pair clowns, sea urchin, cardinal, some red leg crab -shelled , coco worm (feather duster). This picture is magnified....View attachment 215837