Distribution: From Undu Reef, south to Cobue.
Habitat: Found in the Intermediate Zone at a maximum depth of 25 metres.
Adult Size: Up to 14cm.
Appearence: Males have a light blue body, with a varying number and size of dark blue stripes, which extend into the dorsal fin. Some have a dark blue dorsal band.
Females are yellow, except at Londo where they are grey with yellow edges to the fins.
Miscellaneous: Formerly known as Pseudotropheus "shauri" or "black top zebra".