Bluehead Wrasse, Thalassoma amblycephalus (Bleeker 1856)


Other Names: Blue-head Wrasse, Blue-headed Wrasse, Bluntheaded Wrasse, Moon Wrasse, Paddle-fin Wrasse, Two-tone Wrasse

A terminal phase (male) Bluehead Wrasse, Thalassoma amblycephalum, in Fiji. Source: Nick Hobgood / Flickr. License: CC by Attribution-NonCommercial

Summary:
The brightly coloured males usually have a a green to bluish-green head, a yellow band around the anterior body followed by a pinkish body, a yellow pectoral fin with a broad blue outer margin, and a lunate tail. Juveniles have a broad dark stripe from snout through eye to the caudal-fin base, and yellow upper and lower parts of the caudal peduncle and caudal-fin lobes.
This specific name is sometimes spelled amblycephalum.

Cite this page as:
Bray, D.J. 2019, Thalassoma amblycephalus in Fishes of Australia, accessed 12 Jul 2020, http://136.154.202.208/home/species/283

Bluehead Wrasse, Thalassoma amblycephalus (Bleeker 1856)

More Info


Distribution

About Rottnest Island to the Bonaparte Archipelago, including Rowley Shoals, Scott Reef and Hibernia Reef, Western Australia, Ashmore Reef in the Timor Sea, Veronica Island, Northern Territory, and north of Cape York, Queensland and reefs in the Coral Sea, to south of Eden, New South Wales; also Cocos (Keeling) Islands and Christmas Island in the eastern Indian Ocean, and Middleton and Elizabeth reefs, Lord Howe Island and Norfolk Island in the Tasman Sea. Elsewhere the species occurs in the tropical, Indo-west-central Pacific.
Inhabits shallow lagoons, reef flats and seaward reefs at depths to 15 m. Small juveniles often stay close to the reef, while adults may form large midwater schools to feed on zooplankton.

Features

Dorsal fin VIII, 13; Anal fin III, 10-11.
Head naked, no scales on upper part of opercle. 

Feeding

Feeds on plankton, mostly on crustacea.

Etymology

The specific name amblycephalus is derived from the Greek amblys (= blunt) and kephale (= head), presumably in reference to the rounded head of this species.

Species Citation

Julis (Julis) amblycephalus Bleeker 1856, Natuurkundig Tijdschrift voor Nederlandsch Indië 11: 83  Type locality: Java, Indonesia.

Author

Bray, D.J. 2019

Resources

Atlas of Living Australia

Bluehead Wrasse, Thalassoma amblycephalus (Bleeker 1856)

References


Allen, G.R. 1993. Fishes of Ashmore Reef and Cartier Island. Records of the Western Australian Museum, Supplement 44: 67-91 

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

Allen, G.R., Hoese, D.F., Paxton, J.R., Randall, J.E., Russell, B.C., Starck, W.A., Talbot, F.H. & Whitley, G.P. 1976. Annotated checklist of the fishes of Lord Howe Island. Records of the Australian Museum 30(15): 365-454 figs 1-2 

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 

Allen, G.R. & Steene, R.C. 1988. Fishes of Christmas Island Indian Ocean. Christmas Island : Christmas Island Natural History Association 197 pp.

Allen, G.R., Steene, R.C. & Orchard, M. 2007. Fishes of Christmas Island. Christmas Island : Christmas Island Natural History Association 2 edn, 284 pp. 

Allen, G.R. & Swainston, R. 1988. The Marine Fishes of North-Western Australia. A field guide for anglers and divers. Perth, WA : Western Australian Museum vi 201 pp., 70 pls. 

Bernardi, G., Bucciarelli, G., Costagliola, D., Robertson, D.R. & Heiser, J.B. 2004. Evolution of coral reef fish Thalassoma spp. (Labridae). 1. Molecular phylogeny and biogeography. Marine Biology 144: 369-375, 405 

Bleeker, P. 1856. Verslag omtrent eenige vischsoorten gevangen aan de Zuidkust van Malang in Oost-Java. Natuurkundig Tijdschrift voor Nederlandsch Indië 11: 81-92 

Cabanban, A. & Pollard, D. 2010. Thalassoma amblycephalum. The IUCN Red List of Threatened Species 2010: e.T187490A8549696. http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T187490A8549696.en. Downloaded on 27 May 2019.

Choat, J.H., van Herwerden, L., Robbins, W.D., Hobbs, J.P. & Ayling, A.M. 2006. A report on the ecological surveys undertaken at Middleton and Elizabeth Reefs, February 2006. Report by James Cook University to the Department of the Environment and Heritage. 65 pp. 

Coleman, N. 1981. Australian Sea Fishes North of 30°S. Lane Cove, NSW : Doubleday Australia Pty Ltd 297 pp. 

Francis, M. 1993. Checklist of the coastal fishes of Lord Howe, Norfolk, and Kermadec Islands, southwest Pacific Ocean. Pacific Science 47(2): 136-170 figs 1-2 

Gill, A.C. & Reader, S.E. 1992. Fishes. pp. 90-93, 193-228 in Hutchings, P. (ed.)  Reef Biology. A Survey of Elizabeth and Middleton Reefs, South Pacific. Canberra : Australian National Parks Vol. 3, Kowari 230 pp. 

Hobbs, J-P.A., Newman, S.J., Mitsopoulos, G.E.A., Travers, M.J., Skepper, C.L., Gilligan, J.J., Allen, G.R., Choat, H.J. & Ayling, A.M. 2014. Checklist and new records of Christmas Island fishes: the influence of isolation, biogeography and habitat availability on species abundance and community composition. Raffles Bulletin of Zoology Supplement 30: 184–202 

Hobbs, J-P.A., Newman, S .J., Mitsopoulos, G.E.A., Travers, M.J., Skepper, C.L., Gilligan, J.J., Allen, G.R., Choat, H.J. & Ayling, A.M. 2014. Fishes of the Cocos (Keeling) Islands: new records, community composition and biogeographic significance. Raffles Bulletin of Zoology Supplement 30: 203–219 

Hutchins, B. 2004. Fishes of the Dampier Archipelago, Western Australia. Records of the Western Australian Museum, Supplement 66: 343–398 

Hutchins, J.B. 1994. A survey of the nearshore reef fish fauna of Western Australia's west and south coasts — The Leeuwin Province. Records of the Western Australian Museum, Supplement 46: 1-66 figs 1-6 

Hutchins, J.B. 1997. Checklist of fishes of the Houtman Abrolhos Islands, Western Australia. pp. 239-253 in Wells, F. (ed.) The Marine Fauna and Flora of the Houtman Abrolhos Islands, Western Australia. Perth : Western Australian Museum. 

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 

Hutchins, J.B. & Swainston, R. 1986. Sea Fishes of Southern Australia. Complete field guide for anglers and divers. Perth : Swainston Publishing 180 pp. 

Johnson, J.W. 2010. Fishes of the Moreton Bay Marine Park and adjacent continental shelf waters, Queensland, Australia. pp. 299-353 in Davie, P.J.F. & Phillips, J.A. Proceedings of the Thirteenth International Marine Biological Workshop, The Marine Fauna and Flora of Moreton Bay. Memoirs of the Queensland Museum 54(3) 

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

Kuiter, R.H. 1993. Coastal Fishes of South-eastern Australia. Bathurst : Crawford House Press 437 pp. 

Kuiter, R.H. 1996. Guide to Sea Fishes of Australia. A comprehensive reference for divers and fishermen. Sydney, NSW, Australia : New Holland Publishers xvii, 434 pp. 

Moore, G. & Morrison, S. 2009. Fishes of three North West Shelf atolls off Western Australia: Mermaid (Rowley Shoals), Scott and Seringapatam Reefs. Records of the Western Australian Museum, Supplement 77: 221-255 

Moore, G.I., Morrison, S.M., Hutchins, B.J., Allen, G.R. and Sampey, A. 2014. Kimberley marine biota. Historical data: fishes. Records of the Western Australian Museum, Supplement 84: 161-206 

Nakazono, A. 1979. Studies on the sex reversal and spawning behavior of five species of Japanese labrid fishes. Report of Fishery Research Laboratory, Kyushu University 4: 1-64.

Oxley, W.G., Ayling, A.M., Cheal, A.J. & Osborne, K. 2004. Marine surveys undertaken in the Elizabeth and Middleton Reefs Marine National Nature Reserve, December 2003. Townsville : Australian Institute of Marine Sciences 64 pp. 

Oxley, W.G., Emslie, M., Muir, P. & Thompson, A.A. 2004. Marine surveys undertaken in the Lihou Reef National Nature Reserve, March 2004. Townsville : Australian Institute of Marine Science i-vii, 1-67 pp. 

Randall, J.E., Allen, G.R. & Steene, R. 1990. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 507 pp. figs. 

Randall, J.E., Allen, G.R. & Steene, R. 1997. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 557 pp. figs. 

Randall, J.E. & Fautin, D.G. 2002. Fishes other than anemonefishes that associate with sea anemones. Coral Reefs 21: 188-190.

Russell, B.C. 2015. Tribe Julidini and Tribe Pseudolabrini. pp. 1374-1403 in Roberts, C.D., Stewart, A.L. & Struthers, C.D. (eds). The Fishes of New Zealand. Wellington : Te Papa Press Vol. 4 pp. 1153-1748.

Westneat, M.W. 2001. Labridae. pp. 3381-3467 in Carpenter, K.E. & Niem, T.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 6 pp. 3381-4218.

Quick Facts


CAAB Code:37384164

Biology:Hermaphrodite

Conservation:IUCN Least Concern

Depth:0-15 m

Fishing:Aquarium fish

Habitat:Reef associated

Max Size:16 cm SL

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Species Maps

CAAB distribution map