Juveniles bright yellow with black spots, in the course of growth there is a change of colouration, large males blue-grey and with bulge on tip of the snout.
Size : 45 cm
Habitat : In lagoons and not too exposed areas of outreefs, usually in coral-rich areas, 1-40 m. A loner. Juveniles at protected places, e.g. below small overhangs, between rocks or branched coral. Adults also swim above open areas. Feed on various small bottom-dwelling invertebrates also from algae growth.
A relatively common boxfish, only moderately shy.
Distribution : Red Sea, Arabian Gulf, Gulf from Oman and East Africa to SW Japan, French Polynesia and New Zealand.