Plocamopherus maculatus is widely distributed in the Indo-Pacific.The body is translucent-cream with light orange spots and white flecks. There are usually dark orange patches on the mid-line of the notum. There are two or three pairs of elongate lateral papillae usually tipped with pinkish bioluminescent"balls".
Plocamopherus maculatus is nocturnal and can be found in rocky habitats at depths of 1 - 20 m.This species can swim by flexing the body when disturbed. Plocamopherus maculatus lays a pink spiral egg mass.