FB-70056 http://www.fishbase.org/summary/SpeciesSummary.php?id=70056 Animalia Chordata Teleostei Gobiiformes Microdesmidae Ptereleotris Ptereleotris cyanops Kodeeswaran & Praveenraj, 2020 Grootoog-seskiefhaai Atlantic bigeye sixgill shark Atlantic sixgill shark Bigeye Sixgill Shark Bigeye sixgill shark Six-gill shark Cazón de fondo Marrajo Ojigrande Vilma Hexanchus nakamurai (non Teng, 1962) 2023-05-16 2023-05-16 Compagno, L.J.V.0 FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247) Cervigón, F., R. Cipriani, W. Fischer, L. Garibaldi, M. Hendrickx, A.J. Lemus, R. Márquez, J.M. Poutiers, G. Robaina and B. Rodriguez0 Fichas FAO de identificación de especies para los fines de la pesca. Guía de campo de las especies comerciales marinas y de aquas salobres de la costa septentrional de Sur América. FAO, Rome. 513 p. 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(Ref. 128789) IUCN0 The IUCN Red List of Threatened Species. 1964 - onwards. https://www.iucnredlist.org/ (Ref. 130435) Bakiu, R., M. Cakalli and I. Giovos0 The first record of bigeyed sixgill shark, <i>Hexanchus nakamurai</i> Teng, 1962 in Albanian waters. J. Black Sea/Mediterranean Environment 24(1):74-79. (Ref. 131124) FB-GeneralDescr-70065 http://purl.org/dc/dcmitype/Text text/html Patricia Sorongon-Yap 2023-05-18 00:00:00 2023-05-26 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70065 Found on continental and insular slopes. Feeds mainly on bony fishes and cephalopods, sometimes on crustaceans Viviparous, with 13 to 26 young in a litter. Size at birth measures to about 40-45 cm TL (Ref. 125614). It was reported that there is likely some stratification of the distribution by size, presumably with larger individuals present in deeper waters (mostly adult captured in the Bahamas at an average depth of 639.5 m) than the juveniles (< 350 m in Belize and northern Gulf of Mexico). Resource and habitat partitioning between juvenile and much larger adult bluntnose sixgill sharks has been suggested as predation avoidance (Ref. 117400). Daly-Engel, T.S., I.E. Baremore, R.D. Grubbs, S.J.B. Gulak, R.T. Graham and M.P. Enzenauer 2018 Resurrection of the sixgill shark <i>Hexanchus vitulus</i> Springer & Waller, 1969 (Hexanchiformes, Hexanchidae), with comments on its distribution in the northwest Atlantic Ocean. Marine Biodiversity: [1-10]. (Ref. 117400) FB-Distribution-70065 http://purl.org/dc/dcmitype/Text text/html Patricia Sorongon-Yap 2023-05-18 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70065 Atlantic Ocean: Gulf of Mexico, the Caribbean to Venezuela and Guyanas; Bay of Biscay, from France to Morocco and the Mediterranean. Daly-Engel, T.S., I.E. Baremore, R.D. Grubbs, S.J.B. Gulak, R.T. Graham and M.P. Enzenauer 2018 Resurrection of the sixgill shark <i>Hexanchus vitulus</i> Springer & Waller, 1969 (Hexanchiformes, Hexanchidae), with comments on its distribution in the northwest Atlantic Ocean. Marine Biodiversity: [1-10]. (Ref. 117400) FB-LifeCycle-70065 http://purl.org/dc/dcmitype/Text text/html Patricia Sorongon-Yap 2023-05-18 00:00:00 2023-05-26 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org//Reproduction/FishReproSummary.php?ID=70065&StockCode=61794 Viviparous, with number of young 13 in one litter. Length at birth about 40 to 45 cm. Ebert, D.A., S. Fowler and M. Dando 2021 Sharks of the World: A complete guide. Princeton University Press, 607 p. (Ref. 125614) FB-TrophicStrategy-70065 http://purl.org/dc/dcmitype/Text text/html Patricia Sorongon-Yap 2023-05-18 00:00:00 2023-06-29 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ vitulus Found on continental and insular slopes. Feeds mainly on bony fishes and cephalopods, sometimes on crustaceans. It was reported that there is likely some stratification of the distribution by size, presumably with larger individuals present in deeper waters (mostly adult captured in the Bahamas at an average depth of 639.5 m) than the juveniles (< 350 m in Belize and northern Gulf of Mexico). Resource and habitat partitioning between juvenile and much larger adult bluntnose sixgill sharks has been suggested as predation avoidance (Ref. 117400). Ebert, D.A., S. Fowler and M. Dando 2021 Sharks of the World: A complete guide. Princeton University Press, 607 p. (Ref. 125614) FB-Size-70065 http://purl.org/dc/dcmitype/Text text/html Patricia Sorongon-Yap 2023-05-18 00:00:00 2023-05-26 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70065 230 cm TL (male/unsexed; (Ref. 124786)); 178 cm TL (female) Tsikliras, A.C. and D. Dimarchopoulou 2021 Filling in knowledge gaps: Length-weight relations of 46 uncommon sharks and rays (Elasmobranchii) in the Mediterranean Sea. Acta Ichthyol. et Pisc. 51(3):249-255. (Ref. 124786) FB-Threats-2 http://purl.org/dc/dcmitype/Text text/html Belen Acosta 1990-10-18 00:00:00 2024-03-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2 Least Concern (LC) , IUCN Grouper and Wrasse Specialist Group IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006. FB-Habitat-70065 http://purl.org/dc/dcmitype/Text text/html Patricia Sorongon-Yap 2023-05-18 00:00:00 2023-05-26 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70065 bathydemersal; marine; depth range 0 - 700 m (Ref. 125614) Ebert, D.A., S. Fowler and M. Dando 2021 Sharks of the World: A complete guide. Princeton University Press, 607 p. (Ref. 125614)