Scarus frenatus Lacepède, 1802

Taxonomic Naming

The scientific name of this species, the bridled parrotfish, is Scarus frenatus Lacepède, 1802.

Maximum Length and Identification

This species reaches a maximum total length of 47 centimetres, and can be identified by its unique patterns and colouration.

Life Phase Appearance Variation

Its appearance changes across different life phases.

Initial Phase Coloration

During the initial phase, individuals have a reddish to brown body colour, six to seven dark horizontal stripes running along the body, and red fins.

Terminal Phase Male Body Coloration

In males during the terminal phase, the posterior part of the body and the lower half of the head are abruptly lighter in colour.

Terminal Phase Male Fin Markings

Male terminal phase individuals also have blue-green caudal fins that feature a large, orange, crescent-shaped marking.

Eastern Distribution Range

Scarus frenatus is distributed across the Indo-Pacific region, ranging from the Red Sea east to the Line Islands and Ducie Island.

Northern and Southern Distribution Range

Its range extends north to southern Japan, and south to Shark Bay in Western Australia, Lord Howe Island, and Rapa Iti in French Polynesia.

Distribution Exclusion

It is not present in the waters around Hawaii.

Adult Habitat and Depth Range

The bridled parrotfish typically inhabits exposed outer reefs at depths between 1 and 25 metres, and is occasionally found in extremely shallow water.

Juvenile Habitat

Juvenile bridled parrotfish can be found in lagoons, living among reef rubble and coral.

Social Behavior

This species is generally solitary, but may join mixed-species schools while feeding.

Feeding Habit

It feeds by grazing on algae that grows in the benthic zone.