Arc-eye hawkfish is found in shallow waters in the tropical IndoPacific on reefs, resting on coral heads much of the time. Arc-eye hawkfish grows to a maximum size of 20 cm in length, and occurs in a variety of colors. The body may be greenish-brown, dark brown or reddish-orange, while the tail usually is bluish. A broad, longitudinal white band runs along the distal half of the body. A characteristic ring-shaped or U-shaped tricolor marking (red, blue and yellow) occurs around and behind the eyes.
Dorsal spines (total): 10; Dorsal soft rays (total): 11; Anal spines: 3; Anal soft rays: 6.
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The arc-eye hawkfish is a benthic species associated with coral reefs. It usually can be found in lagoon and seaward reefs, at a depth of 1–30 m (3 ft 3 in–98 ft 5 in), with a maximum of 91 m (299 ft).
These voracious predators are very territorial. They spend most of their time perched on corals, especially Acropora, Stylophora, and Pocillopora genera, waiting for prey to approach too close. They mostly feed on small fishes, shrimps, and crabs but also eat isopods, fish eggs and larvae.
Distinct pairing. Spawning ascents into the water column occurred over a distance of 0.4 to 1.0 m.
These fish can be seen in the aquarium trade.