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Type: Article
Published: 2025-06-30
Page range: 563-571
Abstract views: 221
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Facciolella smithi, a new species of deep-water nettastomatid eel (Anguilliformes: Nettastomatidae) from the Arabian Sea

ICAR-National Bureau of Fish Genetic Resources; Lucknow; Uttar Pradesh – 226 002; India
ICAR-National Bureau of Fish Genetic Resources; Lucknow; Uttar Pradesh – 226 002; India
Pisces Taxonomy molecular analyses new species western Indian Ocean

Abstract

A new nettastomatid eel species is described based on eight specimens collected from the deep-water (260–450 meters depth) of the eastern Arabian Sea. The new species is characterized by having large head, dorsal-fin origin before gill openings, body and head bicolour, and total vertebrae 156+–205+. It differs from its congeners in position of dorsal-fin origin (before gill openings vs. behind gill openings in F. castlei, F. equatorialis, F. oxyrhynchus) and from F. karrerae and F. saurencheloides in having larger head (43.6–47.5% PAL vs. 36.2–37.3% PAL in F. karrerae and 28.5–32.0% PAL in F. saurencheloides). Comparison with CO1 mtDNA sequences in GenBank and BOLD, confirms that the new species forms a separate genetic lineage.

 

References

  1. Alcock, A.W. (1898) Natural history notes from H.M. Indian marine survey ship ‘Investigator,’ Commander T.H. Heming, R.N., commanding. Series II, No. 25. A note on the deep‐sea fishes, with descriptions of some new genera and species, including another probably viviparous ophidioid. Annals and Magazine of Natural History, Series 7, 2 (8), 136–156. https://doi.org/10.1080/00222939808678029
  2. Bellotti, C. (1883) Note ittiologiche. Osservazioni fatte sulla collezione ittiologica del civico Museo di Storia Naturale, in Milano. VII. -- I leptocefali del mare di Messina. Atti della Società Italiana di Scienze Naturali di Milano, 26 (2), 165–181.
  3. Böhlke, E.B. (1982) Vertebral formulae for type specimens of eels (Pisces: Anguilliformes). Proceedings of the Academy of Natural Sciences of Philadelphia, 134, 31–49.
  4. Böhlke, E.B. (1989) Methods and Terminology. In: Böhlke, E.B. (Ed.), Fishes of the Western North Atlantic. Memoirs of the Sears Foundation for Marine Research, 1 (Part 9), pp. 1–7.
  5. D’Ancona, U. (1928) Murenoidi (Apodes) del Mar Rosso e del Golfo di Aden. Materiali raccolti dal Prof. Luigi Sanzo nella Campagna della R.N. „Ammiraglio Magnaghi“ 1923–24. Memoria, Reale Comitato Talassografico Italiano, 146, 1–146.
  6. Day, F. (1878) The fishes of India; being a natural history of the fishes known to inhabit the seas and fresh waters of India, Burma, and Ceylon. Part 4. B. Quaritch, London, xx + 227 pp., 57 pls. [pp. i–xx + 553–779, pls. 139–195] https://doi.org/10.5962/bhl.title.55567
  7. Fricke, R., Eschmeyer, W.N. & Van der Laan, R. (Eds.) (2025) Eschmeyer’s Catalog of Fishes: Genera, Species, References. Available from: http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp (accessed 11 January 2025)
  8. Gilbert, C.H. (1891) Descriptions of apodal fishes from the tropical Pacific. In: Scientific results of explorations by the U. S. Fish Commission steamer Albatross. Proceedings of the United States National Museum, 14 (856), 347–352. https://doi.org/10.5479/si.00963801.14-856.347
  9. Golani, D., Gökoglu, M. & Güven, O. (2008) Two new records of deep‐water fish species from the eastern Mediterranean. Marine Biodiversity Records, 1, e46. https://doi.org/10.1017/S1755267206005410
  10. Hoang, D.T., Chernomor, O., Von Haeseler, A., Minh, B.Q. & Vinh, L.S. (2018) UFBoot2: improving the ultrafast bootstrap approximation. Molecular biology and evolution, 35 (2), 518–522. https://doi.org/10.1093/molbev/msx281
  11. Jordan, D.S. & Davis, B.M. (1891) A preliminary review of the apodal fishes or eels inhabiting the waters of America and Europe. Report of the United States Commissioner on Fish and Fisheries, 16, 581–677, pls.
  12. Kalyaanamoorthy, S., Minh, B.Q., Wong, T.K., Von Haeseler, A. & Jermiin, L.S. (2017) ModelFinder: fast model selection for accurate phylogenetic estimates. Nature methods, 14 (6), 587–589. https://doi.org/10.1038/nmeth.4285
  13. Kaup, J.J. (1859) Neue aalaehnliche Fische des Hamburger Museums. Abhandlungen aus dem Gebiete der Naturwissenschaften Herausgegeben von dem Naturwissenschaftlichen verein in Hamburg, 4 (2), 1–29, Supplement 1–4, pls. 1–5.
  14. Klausewitz, W. (1994) Tiefenwasser- und Tiefseefische aus dem Roten Meer. XVIII. Description of the adult stage of the deep‐sea eel Facciolella saurencheloides d’Ancona (Pisces: Osteichthyes: Anguilliformes: Nettastomidae). Senckenbergiana Maritima, 25 (1/3), 29–32.
  15. Klausewitz, W. (1995) Tiefenwasser- und Tiefseefische aus dem Roten Meer. XIX. Description of a new species of the deep‐sea eel genus Facciolella (Pisces: Osteichthyes: Anguilliformes: Nettastomatidae). Senckenbergiana Maritima, 26 (1–2), 45–50.
  16. Kumar, S., Stecher, G., Li, M., Knyaz, C. & Tamura, K. (2018) MEGA X: molecular evolutionary genetics analysis across computing platforms. Molecular Biology and Evolution, 35 (6), 1547–1549. https://doi.org/10.1093/molbev/msy096
  17. Leblebici, S., Özaydin, O. & Eronat, E.G. (2010) First record of Facciola’s sorcerer, Facciolella oxyrhyncha (Actinopterygii, Anguilliformes, Nettastomatidae) from the Aegean Sea. Acta Ichthyologica et Piscatoria, 40 (1), 83–85. https://doi.org/10.3750/AIP2010.40.1.13
  18. Letunic, I. & Bork, P. (2024) Interactive Tree of Life (iTOL) v6: recent updates to the phylogenetic tree display and annotation tool. Nucleic Acids Research, 52, 78–82. https://doi.org/10.1093/nar/gkae268
  19. Minh, B.Q., Schmidt, H.A., Chernomor, O., Schrempf, D., Woodhams, M.D., Von Haeseler, A. & Lanfear, R. (2020) IQ-TREE 2: new models and efficient methods for phylogenetic inference in the genomic era. Molecular biology and evolution, 37 (5), 1530–1534. https://doi.org/10.1093/molbev/msaa015
  20. Parin, N.V. & Karmovskaya, E.S. (1985) Two new species of nettastomid eels (Nettastomatidae, Anguilliformes) from submarine mountains of the south‐eastern Pacific. Zoologicheskii Zhurnal, 64 (10), 1524–1530.
  21. Peters, W.C.H. (1864) Über einige neue Säugethiere (Mormops, Macrotus, Vesperus, Molossus, Capromys), Amphibien (Plathydactylus, Otocryptis, Euprepes, Ungalia, Dromicus, Tropidonotus, Xenodon, Hylodes), und Fische (Sillago, Sebastes, Channa, Myctophum, Carassius, Barbus, Capoëta, Poecilia, Saurenchelys, Leptocephalus). Monatsberichte der Königlichen Preuss (ischen) Akademie der Wissenschaften zu Berlin, Berlin, 19 pp. [pp. 381–399]
  22. Rafinesque, C.S. (1810) Caratteri di alcuni nuovi generi e nuove specie di animali e piante della sicilia, con varie osservazioni sopra i medisimi. Part 1 (involves fishes) & Part 2 (with slightly different title), 108 pp., 20 pls. [Part 1: pp. [i–iv] + 3–69 + 70 (blank), Part 2 with slightly different title, pp. ia–iva + 71–105 + 106 (blank])., pls. 1–20]
  23. Smith, D.G. (1989) Family Nettastomatidae. In: Böhlke, E.B. (Ed.), Fishes of the Western North Atlantic. Memoirs of the Sears Foundation for Marine Research, 1 (Part 9), pp. 568–612.
  24. Smith, D.G. & Castle, P.H.J. (1982) Larvae of the nettastomatid eels: systematics and distribution. Dana Report, 90, 1–44. https://doi.org/10.1163/9789004630079
  25. Smith, D.G., Böhlke, J.E. & Castle, P.H.J. (1981) A revision of the nettastomatid eel genera Nettastoma and Nettenchelys (Pisces:Anguilliformes), with descriptions of six new species. Proceedings of the Biological Society of Washington, 94 (2), 533–560.
  26. Sumod, K.S., Vinu, J., Cubelio, S.S., Hashim, M., Sanjeevan V.N. & Sudhakar, M. (2016) First record of Solitary duckbill eel, Nettastoma solitarium Castle & Smith, 1981 (Anguilliformes: Nettastomatidae) from the Andaman Sea. Marine Biodiversity, 46, 929–932. https://doi.org/10.1007/s12526-015-0438-1
  27. Whitley, G.P. (1938) Studies in ichthyology. No. 11. Records of the Australian Museum, 20 (3), 195–199. https://doi.org/10.3853/j.0067-1975.20.1938.568

How to Cite

Kodeeswaran, P. & Kumar, T.T.A. (2025) Facciolella smithi, a new species of deep-water nettastomatid eel (Anguilliformes: Nettastomatidae) from the Arabian Sea. Zootaxa, 5653 (4), 563–571. https://doi.org/10.11646/zootaxa.5653.4.7