I have a 6 gallon nano cube reef with nothing but some damsels and live sand and rock. after about a month and a half the damsels disappear???? i checked every inch of the tank and the filter, where did my fish go??
That would be my guess as well. OP sit by the tank at night when the lights are off. If you hear some popping or snapping noise you may have a mantis shrimp.Citrinellus;4373170; said:Possible mantis shrimp stowaway in the live rock?