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Hexatrygon bickelli Heemstra & Smith, 1980

Sixgill stingray
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Hexatrygon bickelli   AquaMaps   Data sources: GBIF OBIS
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Image of Hexatrygon bickelli (Sixgill stingray)
Hexatrygon bickelli
Picture by Shao, K.T.

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Myliobatiformes (Stingrays) > Hexatrygonidae (Sixgill stingrays)
Etymology: Hexatrygon: Greek, exa = six + Greek, trygon = the name of a ray; 1749 (Ref. 45335).
Eponymy: David ‘Dave’ Bickell was a South African journalist, formerly the angling correspondent for the ‘Eastern Province Herald’. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien bathydemersaal; diepte 350 - 1120 m (Ref. 9906), usually 362 - 1120 m (Ref. 9906). Deep-water; 46°N - 37°S, 16°E - 154°W

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Indo-Pacific: South Africa eastward to Japan, Australia and the Hawaiian Islands.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 143 cm TL mannelijk / geslacht onbekend; (Ref. 31444); 111.7 cm TL (female)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 0. A bizarre-looking flabby stingray with a long, thick, fleshy snout (Ref. 5578). Dark violet-blue or brownish above, white below (Ref. 5578).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Inhabits soft bottoms of upper continental slopes (Ref. 9906). Feeding habits unknown (Ref. 9906). Minimum depth from Ref. 58018. Probably caught with bottom trawls (Ref. 9906). Maximum length of female from Ref. 84148.

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

Smith, M.M. and P.C. Heemstra, 1986. Hexatrygonidae. p. 142-143. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3966)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)

  Niet bedreigd (LC) ; Date assessed: 05 May 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

Visserij: van geen belang
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Estimates based on models

Preferred temperature (Ref. 123201): 4.1 - 10.7, mean 6.6 °C (based on 1209 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 1.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.6   ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Assuming fecundity<100).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (86 of 100).