Hi all im new here and I have a 10 gal. mini reef which i was inspecting this morning and i noticed a new critter that ive never seen before it looks like one of my astria snails but he has no shell??? i only have 3 astrias in my tank and i checked all 3 and there all in there shells still,what do u guys think this little guy is???? Sorry i dont have a digi. to take a pic with.