Vlamingi Tang (Naso vlamingii)

Naso vlamingii can shift from a muted gray-blue to an almost electric royal blue in seconds when excited or displaying — genuine, fast color-change rather than a trick of the light. Mature males also develop a bulbous forehead bump used in social displays, distinct from the more blade-like horn some of its Naso cousins carry.

Care level: Moderate · Temperament: Semi-aggressive · Max size: ~24" · Min tank: 180+ gal · Diet: Herbivore, algae + herbivore pellets