I saw a small aiptasia growing in a bunch of algae my emerald crab was dining on. Went off to wash my hands to dip them into the tank. Well when I came back the emerald had moved on and the aiptasia was nowhere to be seen. =.= Doubtful the emerald crab ate it, probably more likely the emerald cut off enough algae for the aiptasia to float into the water and... guess my hunt now begin.