Open Access Open Access  Restricted Access Subscription or Fee Access


Redescription of the percoid fish Symphysanodon andersoni Kotthaus (Symphysanodontidae) from the northwestern Indian Ocean,
based on the holotype and the second known specimen



Symphysanodon andersoni was described in 1974 from a single specimen collected southwest of Socotra Island, near the entrance to the Gulf of Aden. A more recent report (2003) of its capture in the Gulf of Kutch, Arabian Sea, was based on a misidentification. The second known specimen of the Bucktoothed Slopefish, S. andersoni, (at 204 mm SL the largest known specimen of the genus Symphysanodon) was collected off the south coast of Oman, Arabian Sea, in April 2014. Symphysanodon andersoni is distinguishable from its congeners by number of tubed scales in the lateral line, 60 to 65 versus 42 to 59 in the other species of the genus. In view of the fact that S. andersoni is poorly known, we redescribe it based on the holotype and the new specimen collected off Oman and provide the first color photograph of the species.



Pisces, Symphysanodon andersoni, Indian Ocean, Arabian Sea, Socotra Island, Oman

Full Text:

PDF/A (1.53 MB)


Ahlstrom, E.H., Butler, J.L. & Sumida, B.Y. (1976) Pelagic stromateoid fishes (Pisces, Perciformes) of the eastern Pacific: Kinds, distributions, and early life histories and observations on five of these from the northwest Atlantic. Bulletin of Marine Science, 26 (3), 285–402.

Anderson, W.D. Jr. (1970) Revision of the genus Symphysanodon (Pisces: Lutjanidae) with descriptions of four new species. Fishery Bulletin, 68 (2), 325–346.

Anderson, W.D. Jr. & Bineesh, K.K. (2011) A new species of the perciform fish genus Symphysanodon (Symphysanodontidae) from the Arabian Sea off the southwestern coast of India. Zootaxa, 2966, 31–36.

Anderson, W.D. Jr. & Springer, V.G. (2005) Review of the perciform fish genus Symphysanodon Bleeker (Symphysanodontidae), with descriptions of three new species, S. mona, S. parini, and S. rhax. Zootaxa, 996, 1–44.

Bleeker, P. (1878) Quatrième mémoire sur la faune ichthyologique de la Nouvelle-Guinée.Archives Néerlandaises des Sciences Exactes et Naturelles, 13, 35–66, pls. 2–3.

Campos, P.N., Bonecker, A.C.T., de Castro, M.S. & Anderson, W.D. Jr. (2009) First record of the fish genus Symphysanodon (Teleostei: Perciformes: Symphysanodontidae) from the western South Atlantic Ocean. Zootaxa, 2270, 63–68.

Heemstra, P.C., Hissmann, K., Fricke, H., Smale, M.J. & Schauer, J. (2006) Fishes of the deep demersal habitat at Ngazidja (Grand Comoro) Island, Western Indian Ocean. South African Journal of Science, 102, 444–460.

Hughes, D.R. (1981) Development and organization of the posterior field of ctenoid scales in the Platycephalidae. Copeia, 1981 (3), 596–606.

Johnson, G.D. (1975) The procurrent spur: An undescribed perciform caudal character and its phylogenetic implications. Occasional Papers of the California Academy of Sciences, 121, 1–23.

Khalaf, M.A. & Krupp, F. (2008) A new species of the genus Symphysanodon (Perciformes: Symphysanodontidae) from the Gulf of Aqaba, Red Sea. aqua, International Journal of Ichthyology, 14 (2), 85–88.

Kotthaus, A. (1974) Fische des Indischen Ozeans. Ergebnisse der ichthyologischen Untersuchungen während der Expedition des Forschungsschiffes “Meteor” in den Indischen Ozean, Oktober 1964 bis Mai 1965. A. Systematischer Teil, XI. Percomorphi (4). “Meteor” Forschungsergebnisse, Reihe D, No. 17, 33–54.

Manilo, L.G. & Bogorodsky, S.V. (2003) Taxonomic composition, diversity and distribution of coastal fishes of the Arabian Sea. Journal of Ichthyology, 43 (Supplement 1), S75–S149.

McCosker, J.E. (1979) Inferred natural history of the living coelacanth. In: McCosker, J.E. & Lagios, M.D. (Eds.), The biology and physiology of the living coelacanth. Occasional Papers of the California Academy of Sciences, No. 134, pp. 17–24.

Quéro, J.-C., Spitz, J. & Vayne, J.-J. (2009) Symphysanodon pitondelafournaisei: Une nouvelle espèce de Symphysanodontidae (Perciformes) de l’île de La Réunion (France, océan Indien). Cybium, 33 (1), 73–77.

Roberts, C.D. (1993) Comparative morphology of spined scales and their phylogenetic significance in the Teleostei. Bulletin of Marine Science, 52 (1), 60–113.


  • There are currently no refbacks.

ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa