LABRIDAE Labroides dimidiatus, 4.8 cm SL (photo by Richard Winterbottom) Labroides dimidiatus (Valenciennes, 1839) Cleaner wrasse D IX, 11; A III, 10; P1 14-15; LLp 26. Body slender. Dorsal profile of head convex; mouth terminal, small; lips thick, the lower strongly bilobed, the 2 half separated by a u-shaped notch; a single pair of canines anteriorly in jaws, a canine a corner of mouth, and several rows of small teeth on side of jaws. Head scaly except for ventral portion. Caudal fin truncate to slightly rounded. Color: juveniles black with a bright blue stripe on back and dorsally on head. Adults light blue shading to pale yellow or white anteriorly, with a black stripe from snout through eye to rear edge of caudal fin, this stripe progressively broader posteriorly. Size: maximum length about 11.5 cm. Distribution: Indo-Pacific, from East Africa and Red Sea to Marquesas Islands and Tuamotu Archipelago. Remarks: inhabits coral reefs. Feeds on crustacean ectoparasites and mucus of fishes.