Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Scyliorhinidae
Etymology: Cephaloscyllium: Greek, kephale = head + skylion = dogfish (Ref. 80388); circulopullum: Named for the dark blotch ('circle dark') at the center of the body, between the pectoral and pelvic fins.
Environment / Climate / Range
Marine; benthopelagic; depth range 118 - 165 m (Ref. 75538). Tropical
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 38 - ? cm
Max length : 37.8 cm TL male/unsexed; (Ref. 75538)
Morphology | Morphometrics
This small-sized shark is distinguished by the following characters: body comparatively slender with a short head; snout moderately flattened, short and broadly rounded; no labial furrows; small teeth in both jaws; an inflatable stomach for water or air; dorsal caudal fin without ridge of enlarged denticles; first dorsal fin origin half of pelvic fin base, distance between snout tip and first dorsal fin origin about 49-50% of TL; from snout tip to pectoral fin origin > 20% of TL; mouth width 38% of HL in adults; first dorsal fin larger than the second one; pectoral fins relatively large and broad. Field characters include, anterior nasal flaps not overlapping mouth posteriorly; color pattern, a few broad dark saddles on back and with almost circle dark blotch on center of body side between pectoral and pelvic fins, no white spots (Ref. 75538).
Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri
Western Pacific: Malaysia and Brunei Darussalam.
Specimens were collected with bottom trawl nets (Ref. 75538).
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.
IUCN Red List Status (Ref. 90363)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00151 - 0.00695), b=3.10 (2.91 - 3.29), based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.9 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (34 of 100) .