Mystery Wrasse

The tank should  contain a thick sand bed, along with live rock creating plenty of caves and crevices for retreating into to if needed. They may also bury themselves in the sand and will use a cocoon if they feel threatened when they sleep. Using a lid is also a good idea as the lined wrasses have been known to jump out of the aquarium. Mystery Wrasses are diurnal, which means they are active by day and sleep at night.