Cephaloscyllium hiscosellum, Australian reticulate swellshark

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Related species
- Species in
  Cephaloscyllium
- Species in
  Scyliorhinidae
- - Classification -
- Scyliorhininae
- Scyliorhinidae
- Carcharhiniformes
- Elasmobranchii
- Chordata
- Animalia

Cephaloscyllium hiscosellum White & Ebert, 2008

Australian reticulate swellshark

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Native range | All suitable habitat | Point map | Year 2050

This map was computer-generated and has not yet been reviewed.

Cephaloscyllium hiscosellum AquaMaps Data sources: GBIF OBIS

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Image of Cephaloscyllium hiscosellum (Australian reticulate swellshark)

Cephaloscyllium hiscosellum
Male picture by White, W.T. & D.A. Ebert

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (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); hiscosellum: hisco (L.), open; sella (L.), saddle, referring to distinctive open-centered saddle-like markings that dominate its color pattern (See ETYFish).

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

Marine; bathypelagic; depth range 294 - 420 m (Ref. 76949). Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Indian Ocean: Australia.

Length at first maturity / Size / Weight / Age

Maturity: L_m 46.0, range 46 - 46.3 cm
Max length : 46.3 cm TL male/unsexed; (Ref. 76949); 52.0 cm TL (female)

Short description Identification keys | Morphology | Morphometrics

A small species with the following characters: head 8.9-13.1% TL in height, trunk width 12.9-19.1% TL; origin of first dorsal-fin usually over mid pelvic-fin base; prenarial length 4.5-5.2% TL; preorbital snout length 1.4-1.6 times prenarial length, 2.6-3.1 in prepectoral length, 5.9-6.7 in prepelvic length; snout-vent length long, 46.2-51.2% TL; nostril 2.5-3.1% TL in width; eye-spiracle space wide, 0.8-1.2% TL; pectoral fin moderate-sized, height 8.7-12.2% TL, posterior margin length 7.4-11.4% TL; anal fin relatively low, height 2.8-3.7% TL; anal-caudal space 5.4-6.5% TL; precaudal length 76.4-79.2% TL; interdorsal space 7.4-9.6% TL; teeth with 3-5 cusps near symphysis of upper jaw; flank denticles are mainly unicuspidate; back without greatly enlarged denticles; long adult clasper, up to 9.3% TL, reaching anal-fin origin; vertebral centra 100-108; low tooth count, each jaw with teeth between 45 and 63; dorsal surface with a striking pattern of dark brown, open-centered saddles (Ref. 76949).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

White, W.T. and D.A. Ebert, 2008. Cephaloscyllium hiscosellum sp. nov., a new swell shark (Carcharhiniformes: Scyliorhinidae) from Northwestern Australia. pp. 147-157. In P.R. Last, W.T. White and J.J. Pogonoski (eds). Descriptions of new Australian chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. 365 p. (Ref. 76949)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 23 April 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
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Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
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Life cycle
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Maturity/Gills rel.
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Anatomy
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Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 7.7 - 12.5, mean 11.8 °C (based on 14 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00263 (0.00138 - 0.00502), b=3.21 (3.04 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.0 ±0.5 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Preliminary low fecundity).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (41 of 100).

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