Barred Filefish

Overview

The Barred Filefish (Cantherhines dumerilii) is a reef-associated marine fish widely distributed across the tropical Indo-Pacific and Eastern Pacific regions. Known for its shy nature, this species is typically encountered as a solitary individual or in pairs, often retreating into reef crevices when approached.

Distribution & habitat

This species inhabits tropical and subtropical waters, ranging from East Africa to French Polynesia and Hawaii, and extending into the Eastern Pacific from Mexico to Colombia. It is commonly found in offshore coral reefs and rocky areas, frequently appearing in surface waters around oceanic islands.

Appearance

The Barred Filefish has a deep, compressed body with velvety skin and a grayish-brown to yellowish-brown base color. It is characterized by approximately 12 vertical dark brown bars along its sides and whitish lips. The species exhibits sexual dimorphism, particularly in the caudal peduncle, where males possess two pairs of prominent, anteriorly directed orange spines that are larger than those found in females. Additionally, males often display more intense orange coloration on their tails and eyes.

Biology & behavior

Active during the day, this filefish is a benthopelagic species that maintains a non-migratory lifestyle. Juveniles are known to be pelagic, often drifting under floating debris. When threatened, the fish is quick to seek shelter in caves or deep reef crevices.

Feeding

The Barred Filefish is an omnivorous feeder. Its diet consists of a variety of items, including the tips of branching corals, algae, sponges, sea urchins, and various mollusks.