Chlorurus perspicillatus, known officially by the English name, spectacled parrotfish, given by professional ichthyologists and Ichthyology or uhu-uliuli as a well-established Hawaiian name for many hundreds of years, is a species of marine fish in the family Scaridae.

[3] Found only in the Eastern Central Pacific Hawaiian Islands, it inhabits lagoons and seaward reefs[4] Young fish are brown with white dots and three white stripes and can reach a maximum size of 24 inches length when fully grown.

[2] Uhu-uliuli can reach 30 centimeters (1 foot) in length and has a blunt oval-shaped head, square tail, and smooth jaws.

The Uhu-uliuli vary in color with males being primarily blue with thin bright pink scale edges that layer the head, while females are dark purple-grey in color with red fins and a white section on the tail where it meets the rest of the body.

[6] These fish commonly start life as female and transition to male over the span of their lives, which usually brings along a color or pattern change.