Redtail Parrotfish

Chlorurus japanensis

The Redtail Parrotfish is a marine ray-finned fish found primarily in the Pacific Ocean, particularly from the Ryukyu Islands to Australia, and recently reported in Tonga. Divers can identify this species by its distinct coloration and body structure. Males exhibit a bicolored pattern with a purple-brown front and pale yellow back, while females are dark brown with a red-orange tail. The species has a fusiform body shape, nine dorsal spines, and three anal spines. They inhabit seaward coral and rocky reefs, preferring areas rich in coral at depths ranging from the surface to 20 meters. These fish primarily feed on benthic algae and are often found in small groups on the reef. The Redtail Parrotfish is oviparous, engaging in distinct pairing during the breeding season. While they are generally harmless to humans, they are commercially fished and sometimes kept in aquariums. The species is currently listed as Least Concern by the IUCN. When diving, encounters with Redtail Parrotfish can be a common occurrence on coral reefs. They are typically seen grazing on algae, contributing to the health of the reef ecosystem. Despite their commercial use, they maintain a stable presence in their natural habitat.