SizeCommon length of 7.8-9.8 inches (20-25 cm)
DietPrimarily algae and seaweed
RangeWestern Pacific through eastern Indonesia, north to Palau and south to Australia and Tonga
HabitatSeaward reefs and lagoons
- Coloration is blue and yellow. Body is light blue transitioning to gray or light yellow on the belly with a pattern of yellow lines. Dorsal and caudal fins are yellow, and a single orange band extends from the base of the pectoral fins nearly to the spine.
- Common length of 7.8-9.8 inches (20-25 cm).
- Venomous dorsal spines.
Upper jaw is fixed and only the tip of the mouth can move, creating a nibbling motion suited for collecting algae off rocks and coral.
- Diet consists only of vegetation, primarily algae and seaweed.
- Upper jaw is fixed and only the tip of the mouth can move, creating a nibbling motion suited for collecting algae off rocks and coral.
- Occurs in the Western Pacific through eastern Indonesia, north to Palau and south to Australia and Tonga.
- Found in areas of seaward reefs and lagoons with high coral populations at depths of 6.5-49.2 (2-15 m).
- Adult commonly found in deeper water lagoons and reef drop-offs.
- Juvenile schools within vegetation in reefs and lagoons of shallower water.
- Pelagic spawners, meaning eggs are spawned into the water column, where they hatch and larvae develop.
- Spawn in groups based on lunar cycle.
- Form breeding pairs for at least the duration of a mating season.
- “Least Concern” on the IUCN Red List.
- Adults usually found in isolated pairs, but juveniles school with other juveniles and occasionally with juvenile scarids (parrotfish).