Longfin Emperor, Lethrinus erythropterus Valenciennes 1830

Other Names: Tail-saddled Emperor

A Longfin Emperor, Lethrinus erythropterus, in the Raja Ampat Islands, West Papua, Indonesia, January 2016. Source: Mark Rosenstein / iNaturalist.org. License: CC by Attribution-NonCommercial-ShareAlike

A brownish to rusty red emperor becoming paler below, with a broad streak from the eye to the snout tip, and sometimes two pale bars on the tail base. The lips and pectoral-fin base are bright red, the fins are reddish to reddish-orange, and the tail is only slightly forked with rounded tips.

Cite this page as:
Dianne J. Bray, Lethrinus erythropterus in Fishes of Australia, accessed 01 Mar 2024, https://fishesofaustralia.net.au/home/species/2459

Longfin Emperor, Lethrinus erythropterus Valenciennes 1830

More Info


Known in Australia from offshore reefs of the northwest and the northern Great Barrier Reef, QLD, and at Ashmore Reef, Timor Sea, and Christmas and Cocos (Keeling) islands in the Indian Ocean. Found elsewhere in the tropical Indo-West-Central Pacific.


Carnivore - feeds on small fishes and invertebrates such as molluscs, echinoderms and crustaceans.


Of minor commercial importance in parts of its range and taken occasionally by recreational anglers.


Dianne J. Bray

Longfin Emperor, Lethrinus erythropterus Valenciennes 1830


Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Perth : Western Australian Museum 292 pp. 106 pls.

Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp.

Allen, G.R. & Smith-Vaniz, W.F. 1994. Fishes of Cocos (Keeling) Islands. Atoll Research Bulletin 412: 1-21.

Carpenter, K.E. 2001. Sparidae, Lethrinidae. pp. 2990-3050 in Carpenter, K.E. & Niem, V.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 5 2791-3379 pp.

Carpenter, K.E. & Allen, G.R. 1989. FAO Species Catalogue. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fisheries Synopsis. No. 125, Vol. 9. Rome : FAO 118 pp.

Gloerfelt-Tarp, T. & Kailola, P.J. 1984. Trawled Fishes of Southern Indonesia and Northwest Australia. Jakarta : Dir. Gen. Fish. (Indonesia), German Tech. Coop., Aust. Dev. Ass. Bur. 406 pp.

Hobbs, J.-P.A., Ayling, A.M., Choat, J.H., Gilligan, J.J., McDonald, C.A., Neilson, J. & Newman, S.J. 2010. New records of marine fishes illustrate the biogeographic importance of Christmas Island, Indian Ocean. Zootaxa 2422: 63–68.

Hutchins, J.B. 2001. Biodiversity of shallow reef fish assemblages in Western Australia using a rapid censusing technique. Records of the Western Australian Museum 20: 247-270

Kuiter, R.H. 1992. Tropical Reef-Fishes of the Western Pacific, Indonesia and Adjacent Waters. Jakarta : PT Gramedia Pustaka Utama 314 pp. pls.

Russell, B.C., Larson, H.K., Hutchins, J.B. & Allen, G.R. 2005. Reef fishes of the Sahul Shelf. The Beagle, Records of the Museums and Art Galleries of the Northern Territory Supplement 1 2005: 83-105.

Valenciennes, A. in Cuvier, G.L. & Valenciennes, A. 1830. Histoire Naturelle des Poissons. Paris : Levrault Vol. 6 559 pp. pls 141-169.

Quick Facts

CAAB Code:37351029

Depth:1-100 m

Fishing:Taken by anglers

Habitat:Reef associated

Max Size:50 cm TL

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