Flagtail Swellshark, Cephaloscyllium signourum Last, Séret & White 2008

Other Names: Flagtail Swellshark

A Flagtail Swellshark, Cephaloscyllium signourum. Source: Australian National Fish Collection, CSIRO. License: CC by Attribution-NonCommercial

A rare brownish swell shark with a variegated pattern of 9–10 darker saddles and a "V"-shaped blotch at the tip of the upper caudal fin lobe. Juveniles are pale yellowish with narrow brown bars.

Cite this page as:
Dianne J. Bray, Cephaloscyllium signourum in Fishes of Australia, accessed 23 May 2024, https://fishesofaustralia.net.au/home/species/2623

Flagtail Swellshark, Cephaloscyllium signourum Last, Séret & White 2008

More Info


Endemic to northeastern Australia from off the Murray Isles and Lihou Reef, Queensland (possibly also off New Caledonia, Vanuata and Fiji).


Nothing is known of the habitat, biology and ecology of this species. 


The specific name signourum is from the Latin signum meaning 'flag' and the Greek oura meaning 'tail', in reference to the distinctive dark flag-like marking on the terminal lobe of the caudal fin.


Dianne J. Bray

Flagtail Swellshark, Cephaloscyllium signourum Last, Séret & White 2008


Clark, E. & J.E. Randall. 2011. Cephaloscyllium stevensi: a new species of swellshark (Carcharhiniformes: Scyliorhinidae) from Papua New Guinea. aqua, International Journal of Ichthyology 17(1): 23-34.

Compagno, L.J.V. & V.H. Niem, 1998. Scyliorhinidae. Catsharks. p. 1279-1292. In K.E. Carpenter and V.H. Niem (eds.) FAO Identification Guide for Fishery Purposes. The Living Marine Resources of the Western Central Pacific. FAO, Rome. (as Cephaloscyllium Sp E in part)

Compagno, L.J.V., D. Dando & S. Fowler. 2005. A field guide to the sharks of the world. Harper Collins Publishing Ltd., London, 368 pp. (as Cephaloscyllium Sp E in part)

Kyne, P.M. & Cavanagh, R.D. 2011. Cephaloscyllium signourum. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. . Downloaded on 09 February 2014.

Last, P.R. & Stevens, J.D. 1994. Sharks and rays of Australia. CSIRO Publishing, Collingwood, Australia. 513 pp. 
(as Cephaloscyllium Sp E in part)

Last, P.R. & Stevens, J.D. 2009. Sharks and Rays of Australia. Second Edition. CSIRO Publishing, Collingwood, Australia.

Last, P.R., Séret, B. & White, W.T. 2008. New swellsharks (Cephalosyllium: Scyliorhinidae) from the Indo-Australian region. CSIRO Marine and Atmospheric Research Paper 22: 129–146.

Quick Facts

CAAB Code:37015039

Conservation:Data Deficient

Depth:480-700 m


Max Size:74 cm TL


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