I can't figure out for the life of me what's slowly eating my zoas.... just when I thought I had it pinpointed to be amphipods, I see these snails all over a zoa frag that i separated from the display 5days ago. They were right ontop where the frag was, 4 or 5 of them, by the time I got my phone they scurried to the underside of the plug. Could these be eating them too? Amphipods and these snail lookin things are the only thing on the zoas at night. I added 2 wrasses (yellow coris and red fairy) there has been a substantial decline in the # of pods in the 75g. There is also a pair of mandarins w/ the wrasses and a baby seahorse in the fuge. Does anyone have any experience with amphipods or snails killing zoas? Everything else in the tank is doing wonderful. Been dealing with this problem for 6months on and off,any help or suggestions will be appreciated. Thanks