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Fish

Bullethead parrotfish

Chlorurus spilurus

Terminal phase (male) red variant
Photo: Tetiaroa Society

Every scrape of its beak changes the reef a little, loosening material that can become coral sand.

Local names
Pa'ati pa'a pa'a auahi
Where it occurs
The Pacific bullethead parrotfish is Chlorurus spilurus; older regional guides used Chlorurus sordidus for the wider species group.

Other names
Legacy source name: Chlorurus sordidus

About this species

The fused teeth of parrotfish form a strong beak. As they scrape algal growth from reef surfaces, they also swallow pieces of coral, contributing to reef erosion and sand production. The quantity varies with species, size and feeding conditions.

Colour changes with age and sexual phase. Many parrotfish can change from female to male as they grow, but the family’s life histories are more varied than a rule that every fish starts female. The seagrass-feeding Leptoscarus vaigiensis, for example, has separate sexes.

At night, these reef fish shelter in cavities; mucus cocoons are also described among parrotfish as part of their nighttime protection.

P. Bacchet, T. Zysman, Y. Lefèvre, 2010. Guide des poissons de Tahiti et ses îles. Au vent des îles. 3e édition.

Terminal phase (male) yellow variant
Photo: François Libert
Initial phase (female)
Photo: Rickard Zerpe
Terminal phase (male) red variant
Photo: François Libert
Juvénile
Photo: François Libert