Jansen's Wrasse, Thalassoma jansenii (Bleeker 1856)
Jansen’s Wrasse, Thalassoma jansenii, at Kadavu, Fiji. Source: Paddy Ryan / www.ryanphotographic.com/. License: All rights reserved
Summary:
Often confused with the related Blackbarred Wrasse, Thalassoma nigrofasciatum, which occurs on the Great Barrier Reef and islands and reefs in the Coral and Tasman seas.
Cite this page as:
Dianne J. Bray, Thalassoma jansenii in Fishes of Australia, accessed 03 Dec 2023, https://fishesofaustralia.net.au/home/species/285
Jansen's Wrasse, Thalassoma jansenii (Bleeker 1856)
More Info
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Distribution |
Recorded in Australia from Scott Reef, Western Australia, and Ashmore Reef in the Timor Sea; also at Christmas and Cocos (Keeling) islands. Found elsewhere in the Indo-west-Pacific, from the Maldives to Micronesia and Japan. Inhabits coastal, lagoon and outer reefs, often in areas exposed to surge on seaward and lagoon reefs in depths to 15 m. |
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Remarks |
Very closely related to Thalassoma nigrofasciatum, and the molecular sequences of 16S rRNA in the two species are the same, though they differ in one nucleotide of the cytochrome b sequence (Bernardi et al. 2004). Although there are no significant colour differences between these two species, and they have overlapping scale counts, they are both considered to be valid species. |
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Author |
Dianne J. Bray |
Jansen's Wrasse, Thalassoma jansenii (Bleeker 1856)
References
Allen, G.R., N.J. Cross, C.J. Allen & M.F. Gomon 2006. Labridae: Labrinae. pp. 1368-1418 in Beesley, P.L. & Wells, A. (eds). Zoological Catalogue of Australia. Volume 35 Australia : ABRS & CSIRO Publishing Parts 1-3, 2178 pp.
Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp.
Allen, G.R. & R.C. Steene. 1988. Fishes of Christmas Island Indian Ocean. Christmas Island Natural History Association, Christmas Island, Indian Ocean, 6798, Australia. 197 pp.
Allen, G.R. & W.F. Smith-Vaniz. 1994. Fishes of the Cocos (Keeling) Islands. Atoll Research Bulletin 412: 21 p.
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.
Cabanban, A. & Pollard, D. 2010. Thalassoma jansenii. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2.
Kuiter, R.H. 1992. Tropical reef-fishes of the western Pacific Indonesia and adjacent waters. Gramedia Pustaka Utama, Jakarta.
Kuiter, R.H. & Tonozuka, T. 2001. Pictorial guide to Indonesian reef fishes. Part 2. Fusiliers - Dragonets, Caesionidae - Callionymidae. Zoonetics, Australia.
Randall, J.E. 2003. Thalassoma nigrofasciatum, a new species of labrid fish from the south-west Pacific. Aqua J. Ichthyol. Aquat. Biol. 7(1): 1-8.
