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Hexanchus nakamurai  Teng, 1962

Bigeyed sixgill shark
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Hexanchus nakamurai   AquaMaps   Data sources: GBIF OBIS
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Image of Hexanchus nakamurai (Bigeyed sixgill shark)
Hexanchus nakamurai
Picture by Murch, A.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Hexanchiformes (Frill and cow sharks) > Hexanchidae (Cow sharks)
Etymology: Hexanchus: Greek, exa = six + Gree, agcho, narrow (Ref. 45335);  nakamurai: Named for Dr. Hiroshi Nakamura.

环境 / 气候 / 范围 生态学

; 海洋 深海底的; 深度上下限 0 - 600 m (Ref. 5578), usually 90 - 600 m (Ref. 6874).    , preferred ?; 49°N - 35°S, 99°W - 161°E (Ref. 55216)

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Wide-ranging, patchily distributed species, in warm temperate and tropical seas (Ref. 94780). Western Central Atlantic: Mexico (Ref. 13186), off Bahamas, northern Cuba, Nicaragua and Costa Rica. Eastern Atlantic: France to Morocco, including Mediterranean Sea (Ref. 13573); possibly Côte d'Ivoire and Nigeria. Indian Ocean: off eastern and southern Africa (Ref. 13573), Aldabra Island (India); Western Australia (Ref. 6871). Western Pacific: Japan, Taiwan, Philippines, New Caledonia and eastern Australia (Ref. 13573).

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm ?, range 142 - 178 cm
Max length : 180 cm TL 雄鱼/尚未辨别雌雄; (Ref. 247); common length : 120 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5217)

简单描述 型态特徵 | 形态测量图

脊椎骨: 155. This slender-bodied shark is readily distinguished from its larger congener (H. griseus) by having a narrower head, relatively larger eyes, 5 large lower comb-shaped anterolateral teeth, a long slender dorsal-caudal space, with distance from the dorsal origin to the upper caudal origin being at least twice the length of the dorsal fin base; with the upper and lower caudal postventral margins forming a strong arch. In life, Color of dorsum a uniform pale brown without a light line extending along the lateral body trunk, the trailing fin edges are white in some specimens and the ventral surface is lighter (Ref. 94780).

生物学特性     字汇 (例如 epibenthic)

Found on continental and insular shelves and upper slopes, from 90 to 600 m depth, usually on or near bottom, may move to the surface at night (Ref. 247, 5578). Probably feeds on bony fish and crustaceans (Ref. 13573). Ovoviviparous (Ref. 205), with 13 young in a litter (Ref. 247). Size at birth measures to about 40-43 cm TL (Ref. 94780). Not dangerous to people as far as is known (Ref. 247). Utilized for its fins, meat and liver oil but of little value due to its relatively small size (Ref.58048).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

Ovoviviparous, with number of young 13 in one litter. Length at birth about 43 cm (Ref. 247). Distinct pairing with embrace (Ref. 205).

主要参考文献 Upload your references | 参考文献 | 合作者 : Compagno, Leonard J.V. | 合作者

Ebert, D.A., W.T. White and H.-H. Ho, 2013. Redescription of Hexanchus nakamurai Teng 1962, (Chondrichthyes: Hexanchiformes: Hexanchidae), with designation of a neotype. Zootaxa 3752(1):020-034. (Ref. 94780)

世界自然保护联盟红皮书 (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

对人类的威胁

  (Ref. 247)




人类利用

渔业: 自给性渔业
FAO(Publication : search) | FisheriesWiki | 周边海洋

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