Arc-Eye Hawkfish

The Arc-Eye Hawkfish is a charismatic and widely distributed hawkfish species recognized by the distinctive horseshoe-shaped or arc-shaped marking behind each eye, from which it derives its common name. Its coloration is variable and can range from olive-brown to reddish-orange, often with a broad white lateral stripe or blotched patterning along the flanks. The eye arc itself is composed of a bright orange and blue semicircular band that creates a striking facial feature. Growing to approximately 5.5 inches, this is a medium-sized hawkfish with an engaging, alert personality.

In the wild, Arc-Eye Hawkfish are found perched atop coral heads, particularly Pocillopora and other branching corals, throughout the Indo-Pacific from the Red Sea to Hawaii. Like all hawkfish, they lack a swim bladder and spend most of their time resting on elevated vantage points from which they survey their surroundings with keen, constantly moving eyes. They are ambush predators that launch swift strikes at passing small crustaceans and zooplankton, returning to their perch after each capture. Their bold, inquisitive nature and constant watchful posture make them endlessly entertaining aquarium residents.

The Arc-Eye Hawkfish is an excellent species for beginner aquarists due to its robust constitution, disease resistance, and eager acceptance of prepared foods. It requires only a modest 30-gallon aquarium with rockwork or coral providing elevated perching sites. While reef-safe with caution regarding corals, it is a known predator of ornamental shrimp and very small crabs, and may harass small, timid fish such as firefish or small gobies. It is best kept singly, as conspecifics will fight in confined spaces. Despite these caveats, its manageable size and captivating personality make it a rewarding addition to most marine community setups.