The Blue Boxfish, Ostracion meleagris, displays sexual dimorphisms, with the male displaying a black and blue mottled pattern with yellow highlights, while the female is a dark brown to black color with white spots covering the entire body and tail. Since they can release a toxin if stressed or injured, they should never be kept with aggressive tank mates. Instead, they are best kept with other peaceful and reef safe tanks mates, and can even kept in a small school with multiple females to one male, if the tank is large enough.
They are reef safe, but may nip at tubeworms such as feather dusters. Diet should include a variety of chopped krill, crab, shrimp, and squid as well as spirulina, marine algae, seaweed and algae based foods 2-3 times daily.