SizeMaximum length of 3.7 inches (9.5 cm)
RangePacific from Christmas Island to Line Islands, north to the Yaryama Islands and south to the Great Barrier Reef, Figi and Samoa
HabitatUpper areas of steep outer-reed slopes
- Coloration differs for males and females (sexual dimorphism).
- Female ranges from peach to pink into almost orange, with darker magenta or purple margins to the fins.
- Male is more orange in color, with a distinct red dorsal fin, blue pectoral and anal fins, and a bright blue edge to the margin.
- Maximum length is 3.7 inches (9.5 cm).
Individuals are born female and a select few—usually the largest females—become male later in life.
- Diet consists primarily of zooplankton.
- Occurs in the Pacific from Christmas Island to the Line Islands, north to the Yaeyama Islands and south to the Great Barrier Reef, Fiji and Samoa.
- Found in upper areas of steep outer-reef slopes in waters with moderate current at depths of 3.2-59 feet (1-18 m).
- Broadcast reproduction, wherein male and female gametes are released into the water to fertilize the egg.
- Protogynous hermaphrodite, meaning individuals are born female and a select few—usually the largest females—become male later in life.
- “Least Concern” on the IUCN Red List.
- School into expansive, often motionless groups.
- Diversity of Fishes. Helfman/Collette/Facey/Bowen.