Bigeyed sixgill shark
📖 Overview
Found on continental and island shelves and slopes, occasionally near surface or inshore from 0 to 700 m depth. Feeds on small to medium-sized bony fishes and occassionally on crustaceans. Viviparous, with 13-26 young in a litter . Size at birth measures to about 40-43 cm TL . It is taken as bycatch within its range, but is not commercially important . Utilized for its fins, meat and liver oil but of little value due to its relatively small size .
🔬 Taxonomy
🐟 Physical Description
Vertebrae: 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 .: elongated; Cross section: oval.
🌀 Behaviour
Behavioural data for Bigeyed sixgill shark is currently being reviewed.
🦐 Diet
🥚 Reproduction
Viviparous, with number of young 13 in one litter. Length at birth about 43 cm . Distinct pairing with embrace .
🌍 Habitat & Distribution
Marine; bathydemersal; depth range 0 - 700 m , usually 90 - 600 m . Deep-water; 33°N - 36°S, 30°E - 178°W West Pacific: patchily distributed in most warm-temperate and tropical seas.
🌿 Ecology
small to medium-sized bony fishes and occassionally on crustaceans
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Bigeye sixgill shark · Bigeyed sixgill shark |
| 🌍CES | žralok Nakamuraiho |
| 🇩🇪German | Grossaugen-Sechskiemerhai |
| 🌍ELL | Μεγαλόματος εξαβράγχιος |
| 🇫🇮Finnish | pikkukidushai |
| 🇫🇷French | Griset · Requin vache · Requin-vache |
| 🌍HEB | ששזים |
| 🇮🇹Italian | Notidano dagli occhi grandi |
| 🇯🇵Japanese | Shirokagura · シロカグラ |
| 🌍LIT | didžiaakis šešiažiaunis ryklys |
| 🇳🇱Dutch | Grootoogzeskieuwshaai |
| 🇷🇺Russian | Большеглазая шестижаберная акула |
| 🇪🇸Spanish | Cañabota Ojigrande · cazón de seis branquias |
| 🌍THA | ปลาฉลามเหงือกหกช่องตาโต |
| 🇨🇳Chinese | 中村氏六鰓鯊 · 大眼六鰓鮫 · 長吻六鰓鯊 |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Hexanchus griseus nakamurai | Teng | 1962 | Synonym |
| Hexanchus vitulus | Springer & Waller | 1969 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 6 records indexed .
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