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Issue: Vol. 5693 No. 3: 18 Sept. 2025
Type: Article
Published: 2025-09-18
DOI: 10.11646/zootaxa.5693.3.8
Page range: 432-440
Abstract views: 70
PDF downloaded: 2

A new species of the eelpout genus Ophthalmolycus (Teleostei, Zoarcidae) from off South Orkney Islands, Weddell Sea

Severtsov Institute of Ecology and Evolution; Russian Academy of Sciences; 119071 Moscow; Russia.; Shirshov Institute of Oceanology; Russian Academy of Sciences; 117218 Moscow; Russia.
Shirshov Institute of Oceanology; Russian Academy of Sciences; 117218 Moscow; Russia.
Severtsov Institute of Ecology and Evolution; Russian Academy of Sciences; 119071 Moscow; Russia.; Shirshov Institute of Oceanology; Russian Academy of Sciences; 117218 Moscow; Russia.; Tomsk State University; 634050 Tomsk; Russia.
Pisces Antarctic demersal ichthyofauna deep water morphology taxonomy

Abstract

Ophthalmolycus lacrimegalos sp. nov. is described from a single specimen collected off the South Orkney Islands, Weddell Sea, Southern Ocean at a depth of 1,495 m. The new species differs from its congeners by the combination of extensive squamation covering the abdomen, predorsal area, and pectoral axil; an enlarged lachrymal bone, a wide bony interorbital space, and other characters (cephalic pore configuration, meristics, body proportions, coloration, etc.) in combination. This is the sixth species of the genus in the Antarctic waters, bringing the total number of known species in the genus to ten. However, the distinction of Ophthalmolycus in its current composition from the species-rich genus Lycenchelys requires elucidation. A revised key to the species of Ophthalmolycus is provided.

 

References

  1. Anderson, M.E. (1982) Revision of the fish genera Gymnelus Reinhardt and Gymnelopsis Soldatov (Zoarcidae), with two new species and comparative osteology of Gymelus viridis. National Museum of Canada Publications in Zoology, 17, i–iv + 1–76.
  2. Anderson, M.E. (1988) Biology of the Antarctic Seas 19. Studies on the Zoarcidae (Teleostei: Perciformes) of the Southern Hemisphere. I. The Antarctic and Subantarctic regions. Antarctic Research Series, 47, 59–113. https://doi.org/10.1029/AR047p0059
  3. Anderson, M.E. (1990) Studies on the Zoarcidae (Teleostei: Perciformes) of the Southern Hemisphere. III. The southwestern Pacific. The J.L.B Smith Institute of Ichthyology Special Publication, 50, 1–17. [http://hdl.handle.net/10962/70348]
  4. Anderson, M.E. (1992) Studies on the Zoarcidae (Teleostei: Perciformes) of the Southern Hemisphere. VI. Review of the genus Ophthalmolycus Regan, 1913, with description of a new species from Chile. The J.L.B Smith Institute of Ichthyology Special Publication, 53, 1–10. [http://hdl.handle.net/10962/70403]
  5. Anderson, M.E. (1994) Systematics and osteology of the Zoarcidae (Teleostei: Perciformes). Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology, 60, 1–120. [http://hdl.handle.net/10962/d1019910]
  6. Andriashev, A.P. (1955) A review of the fishes of the genus Lycenchelys Gill (Pisces: Zoarcidae) and related forms in the seas of the U.S.S.R. and adjacent waters. Transactions of the Zoological Institute AN SSSR, 18, 349–384. [in Russian]
  7. Andriashev, A.P. & Fedorov, V.V. (1986) First discovery of Zoarcidae in New Zealand waters. Voprosy Ikhtiologii, 26 (1), 24–32. [in Russian]
  8. Garman, S. (1899) Reports on an exploration off the west coasts of Mexico, Central and South America, and off the Galapagos Islands, in charge of Alexander Agassiz, by the U.S. Fish Commission Steamer Albatross, during 1891, Lieut. Commander Z.L. Tanner, U.S.N., commanding. No. XXVI. The Fishes. Memoirs of the Museum of Comparative Zoology, 24, 1–431, pls. 1–85 + A–N. https://doi.org/10.5962/bhl.part.27494
  9. Gill, T.N. (1861) Catalogue of the fishes of the eastern coast of North America, from Greenland to Georgia. Proceedings of the Academy of Natural Sciences of Philadelphia, 13 (Supplement), 1–63. [https://www.jstor.org/stable/pdf/4059578.pdf]
  10. Gill, T.N. (1884) On the anacanthine fishes. Proceedings of the Academy of Natural Sciences of Philadelphia, 36, 167–183. [https://www.jstor.org/stable/4060995]
  11. Gosztonyi, A.E. (1977) Results of the research cruises of FRV "Walther Herwig" to South America. XLVIII. Revision of the South American Zoarcidae (Osteichthyes, Blennioidei) with the description of three new genera and five new species. Archiv für Fischereiwissenschaft, 27 (3), 191–249.
  12. Günther, A. (1880) Report on the shore fishes procured during the voyage of H. M. S. Challenger in the years 1873–1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger, 22, 1 (6), 1–82, pls. 1–32. [https://biostor.org/reference/144533] https://doi.org/10.5962/bhl.title.51598
  13. Matallanas, J. (2009) Description of Ophthalmolycus andersoni sp. nov. (Pisces, Zoarcidae) from the Antarctic Ocean. Zootaxa, 2027 (1), 55–62. https://doi.org/10.11646/zootaxa.2027.1.4
  14. Matallanas, J. (2011) Description of two new species of Ophthalmolycus (Teleostei: Zoarcidae) from the Southern Ocean and key to species of the genus. Journal of the Marine Biological Association of the United Kingdom, 91 (2), 561–567. https://doi.org/10.1017/S0025315410000615
  15. Morozov, E.G., Spiridonov, V.A., Molodtsova, T.N., Frey, D.I., Demidova, T.A. & Flint, M.V. (2020) Investigations of the ecosystem in the Atlantic sector of Antarctica (cruise 79 of the R/V Akademik Mstislav Keldysh). Oceanology, 60 (5), 721–723. https://doi.org/10.1134/S0001437020050161
  16. Morozov, E.G., Flint, M.V., Orlov, A.M., Frey, D.I., Molodtsova, T.N., Krechik, V.A., Latushkin, A.A., Salyuk, P.A., Murzina, S.A., Minin, K.V., Mishin, A.V., Mosharov, S.A., Seliverstova, A.M., Borzykh, O.G., Melnik, A.V., Mikhailov, D.N., Chukmasov, P.V., Zamshin, V.V. & Bitiutskii, D.G. (2022) Oceanographic and ecosystem studies in the Atlantic sector of Antarctica (cruise 87 of the research vessel Akademik Mstislav Keldysh). Oceanology, 62 (5), 721–723. https://doi.org/10.1134/S0001437022050150
  17. Pappenheim, P. (1912) Die Fische der deutschen Südpolar-Expedition 1901–1903: l. Die Fische der Antarktis und Subantarktis. Deutsche Südpolar-Expedition 1901–1903, 13 (Zoology 5), 163–182, pls. 9–10. [https://biostor.org/reference/144529]
  18. Peden, A.E. & Anderson, M.E. (1978) A systematic review of the fish genus Lycodapus (Zoarcidae) with descriptions of two new species. Canadian Journal of Zoology, 56 (3), 1925–1961. https://doi.org/10.1139/z78-262
  19. Pequeño, G.R. & Sáez, S.B. (2007) The rare zoarcid fish Ophthalmolycus macrops (Günther, 1880) (Osteichthyes: Perciformes: Zoarcidae) in Chile. Revista de Biologia Marina y Oceanografia, 42 (3), 371–376. [https://www.redalyc.org/pdf/479/47942314.pdf] https://doi.org/10.4067/S0718-19572007000300016
  20. Regan, C.T. (1913) The Antarctic fishes of the Scottish National Antarctic Expedition. Transactions of the Royal Society of Edinburgh, 49 (2), 229–292, pls. 1–11. [https://biostor.org/reference/48647] https://doi.org/10.1017/S0080456800003951
  21. Sabaj, M.H. (2025) Codes for Natural History Collections in Ichthyology and Herpetology. Online Supplement. Version 9.0. 14 February 2022. American Society of Ichthyologists and Herpetologists, Washington, D.C. Available from: https://asih.org (accessed 10 June 2025)
  22. Swainson, W. (1839) On the natural history and classification of fishes, amphibians, and reptiles. Vol. 2. Longman, Orme, Brown, Greene, & Longmans, London, 82–83 + 184 + 283. https://doi.org/10.5962/bhl.title.62140
  23. Tomo, A.P., Marschoff, E. & Torno, A.E. (1977) Nueva especie del genero Lycenchelys Gill (Pisces, Zoarcidae) hallado en proximidades de la Isla Amberes, peninsula Antartica. Instituto Antártico Argentino, Direccion Nacional del Antartico, Contribucion No. 221, 1–9.

How to Cite

Prokofiev, A.M., Kobyliansky, S.G. & Orlov, A.M. (2025) A new species of the eelpout genus Ophthalmolycus (Teleostei, Zoarcidae) from off South Orkney Islands, Weddell Sea. Zootaxa, 5693 (3), 432–440. https://doi.org/10.11646/zootaxa.5693.3.8