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Cephaloscyllium sarawakense Yano, Ahmad & Gambang, 2005

Sarawak pygmy swell shark
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Image of Cephaloscyllium sarawakense (Sarawak pygmy swell shark)
Cephaloscyllium sarawakense
Picture by Ebert, D.A.

Classificatie / Names Lokale 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) > Scyliorhininae
Etymology: Cephaloscyllium: cephalus, from kephale (Gr.), head, referring to its very broad and depressed head; skylion, Greek for dogfish or small shark. (See ETYFish);  sarawakense: -ensis, Latin suffix denoting place: Sarawak, Malaysia, type locality. (See ETYFish).

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

marien benthopelagisch; diepte 100 - 200 m (Ref. 94801). Subtropical

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

Pacific Ocean: South China Sea (western south Taiwan, Hong Kong, Gulf of Tongking, Vietnam, Malaysia).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm 37.5, range 35 - 40 cm
Max length : 39.7 cm TL mannelijk / geslacht onbekend; (Ref. 75582); 44.1 cm TL (female)

Korte beschrijving Morfologie | Morfometrie

This small-sized shark is distinguished by the following characters: adults with two distinct and wide brown saddle blotches before first dorsal fin while juveniles with 3; first saddle immediately behind eye, second over posterior 1/3 of base and inner margin of pectoral fin, the third a little before first dorsal fin, which fades with growth; dark lateral circular to oblong blotches above gill openings and on lateral side of trunk; young individuals with many polka dots on body and fins; anterior nasal flap triangular without an elongate flap (Ref. 98601).

Biologie     Verklarende woordenlijst (bv. epibenthic)

All specimens were collected by trawl nets near the edge of the continental shelf (Ref. 75538).

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

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

Yano, K., A. Ahmad, A.C. Gambang, A.H. Idris, A.R. Solahuddin and Z. Aznan, 2005. Sharks and rays of Malaysia and Brunei, Darussalam. SEAFDEC-MFRDMD/SP/12. Kuala Terengganu. Sharks and Rays Malaysia and Brunei:557 pp. (Ref. 75538)

Status op de Rode Lijst van het IUCN (Ref. 125652)

  Ernstig bedreigd (CR) (A2d); Date assessed: 20 May 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Estimates based on models

Preferred temperature (Ref. 123201): 17.5 - 23.6, mean 20.2 °C (based on 66 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00275 (0.00140 - 0.00542), b=3.20 (3.02 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  4.0   ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Preliminary low fecundity).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (34 of 100).