Cephaloscyllium stevensi, Steven's swellshark

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Cephaloscyllium stevensi Clark & Randall, 2011

Steven's swellshark
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Cephaloscyllium stevensi   AquaMaps   Data sources: GBIF OBIS
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Image of Cephaloscyllium stevensi (Steven\
Cephaloscyllium stevensi
Female picture by Randall, J.E.

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

Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (Cat sharks)
Etymology: Cephaloscyllium: Greek, kephale = head + skylion = dogfish (Ref. 80388);  stevensi: Named for Dr. John Stevens, whose monumental volume with Peter Last on the sharks of Australia in 1994 was the foundation for research that led to the descriptions of 37 new chondrichthyan fishes, including 11 species of Cephaloscyllium.  More on authors: Clark & Randall.

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

; marien; diepteverspreiding 240 - 274 m (Ref. 86282).   Tropical

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Western Pacific: Papua New Guinea.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 66.0 cm TL (female)

Korte beschrijving Morfologie | Morfometrie

Similar to its congeners, this species is most easily distinguished by its color pattern: gray-brown above, whitish ventrally, mottled with brown and whitish spots of variable size over head and body, including ventrally; 6 large dark brown saddle blotches dorsally on head and body and 3 on caudal fin; first four dorsal dark blotches connecting or leading obliquely to other dark blotches below; small white spots most distinct within or at edges of dark brown blotches (Ref. 86282).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Voornaamste referentie Upload your references | Referenties | Coördinator : Compagno, Leonard J.V. | Medewerkers

Clark, E. and J.E. Randall, 2011. Cephaloscyllium stevensi: a new species of swellshark (Carcharhiniformes: Scyliorhinidae) from Papua New Guinea. aqua, Int. J. Ichthyol. 17(1):23-34. (Ref. 86282)

Status op de Rode Lijst van het IUCN (Ref. 123251)


CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Preferred temperature (Ref. 115969): 8.9 - 11.8, mean 9.1 °C (based on 6 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00170 - 0.00646), b=3.15 (2.97 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Kwetsbaarheid (Ref. 59153):  Moderate to high vulnerability (54 of 100) .