Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (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 Ökologie

seewasser bathydemersal; tiefenbereich 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.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 143 cm TL Männchen/unbestimmt; (Ref. 31444); 111.7 cm TL (female)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

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

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.

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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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)

IUCN Rote Liste Status (Ref. 130435: Version 2024-2)

nicht bedroht (LC) ; Date assessed: 04 May 2023

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: nicht kommerziell

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Estimates based on models

Preferred temperature (Ref. 123201): 4.1 - 10.7, mean 6.6 °C (based on 1209 cells).

Phylogenetic diversity index (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).

Trophic level (Ref. 69278): 3.6 ±0.5 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Assuming fecundity<100).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (86 of 100).

Hexatrygon bickelli Heemstra & Smith, 1980