Docile fish. Should not be kept with aggressive tankmates (Tangs included) unless tank is large. Not the best swimmer, and rather slow to react and defend itself. Best if in species specific tank.
Needs lots of big caves. During the day, it will either spend most of its time in shelter, or swim passively around the tank. Best kept in dimmer tanks, but can be acclimated to "reef light intensity" tanks. Has biolumninescent bacteria located on its cheeks; thought to serve as predation device during nocturnal hunts (either for observation or to lure prey).
Noctornal fish that feeds primarily on small crustaceans (shrimps included). Will probably not eat larger ornamental shrimps like cleaner shrimps. Will eat very small fishes if given the chance (not really a concern with the fishes available for the hobby). Special attention to feeding is necessary if tank does not have a healthy poputlation of crustacean infauna.
Grows to 6-7" Two species imported (currently, Cleidopus japonicus is what's available). From the Indopacific, at usually depth below 100 feet.