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The Longfin Emperor (Lethrinus erythropterus) is a tropical fish species that is a member of the ‘Tropical Emperors’ fish family Lethrinidae. The distribution of this species is the warm tropical waters of the Indo-Western Pacific region and it is known to occur from East Africa across to Papua New Guinea, the Philippines and Palau. The body and head are coloured dull red to brown which fades ventrally. There may be two light black bars on the peduncle and the caudal fin is only slightly forked with the tips rounded. There is a broad white streak that originates from the eye and ends at the tip of the snout and the lips and the base of the pectoral fin are red whilst the fins are reddish. This species can be found occurring on coral reefs and adjacent sandy bottoms and it is known to feed on echinoderms, molluscs, crustaceans, and small fish. The Longfin Emperor (Lethrinus erythropterus) grows to a maximum length of approximately 50cm.
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