The most intensely colored red ones (females), as well as the type specimens on which the species was described, occur at Minos Reef, which is located a few kilometers off the coast near Meluluca. As its popular name indicates, the females have an orange-red color. Both the body and the vast majority of the fins are provided with this color. In addition to this O-shape in females, which can be found in about 80% of the population, there are also females with an OB (orange blotch) markings, as well as females with a brown-beige color. These two color forms each occur in approximately 10% of the females present. The males have a solid blue color, similar to that of Metriaclima callainos