I have hundreds of these guys in my tank most of which are only 1-2mm in size. This is the biggest one I have found so far. I am 99% sure the lil' ones are eating coralline. They are active during the day but its at night I see most of them. Cleaned about a 100 of them out tonite, thats when I found the big guy. I have about 150 Zoa polyps in my tank and havent noticed a huge decrease, but growth has slowed somewhat too.
ID?
Thank you.
ID?
Thank you.