The Hawaiian blackhead triplefin can be found in a coral reef in which 2.4 square mile area?
Midway Atoll Midway Atoll ( ; also called Midway Island and Midway Islands; Hawaiian: "Pihemanu Kauihelani") is a 2.4 sqmi atoll in the North Pacific Ocean at . As its name suggests, Midway is roughly equidistant between North America and Asia. Midway Atoll is an unorganized, unincorporated territory of the United States. Midway continues to be the only island in the Hawaiian archipelago that is not part of the state of Hawaii. Unlike the other Hawaiian islands, Midway observes Samoa Time (, i.e., eleven hours behind Coordinated Universal Time), which is one hour behind the time in the state of Hawaii. For statistical purposes, Midway is grouped as one of the United States Minor Outlying Islands. The Midway Atoll National Wildlife Refuge, encompassing 590991.50 acre of land and water (mostly water) in the surrounding area, is administered by the United States Fish and Wildlife Service (FWS). The refuge and most of its surrounding area are part of the larger Papahānaumokuākea Marine National Monument.
Brownback trevally The brownback trevally, "Carangoides praeustus" (also known as the brown-backed trevally), is a species of small inshore marine fish classified in the jack family, Carangidae. The brownback trevally is distributed in two populations through the tropical waters of the Indo-west Pacific region, ranging from the Persian Gulf east to India, South East Asia and the Indonesian islands. The species is distinguished from similar species by its completely scaled breast and black-tipped second dorsal fin, and is known to reach a maximum length of 25 cm. The brownback trevally inhabits inshore waters including bays and estuaries, where it preys on demersal crustaceans and small fish. Other aspects of its biology are poorly known, and it is of minor importance to fisheries, occasionally caught by hook and line or trawls. William Smith-Vaniz has recently suggested the two distinct populations may actually represent two distinct species.