Pristiophorus cirratus

(LATHAM, 1794)


Longnose sawshark
Classification: Elasmobranchii Pristiophoriformes Pristiophoridae

Reference of the original description
LATHAM, J. (1794)
An essay on the various species of Sawfish. Transactions of the Linnean Society of London, 2: 273-282, 2 pl.

Image of the original description

Pristiophorus cirratus (LATHAM, 1794)

Images of the original description (synonym)
No image in first description.
Synonyms / new combinations and misspellings
Pristis anisodon, Pristis cirratus, Pristis cirrhata, Pristis cirrhatus, Squalus anisodon, Squalus tentaculatus

Types
Pristiophorus cirratus
Holotype: BMNH: ?


Description:


Citation: Pristiophorus cirratus (LATHAM, 1794): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 09/2014

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Pristiophorus cirratus (LATHAM, 1794), © FAO, www.fish-base.org

Common names
spa Tiburón sierra trompudo, fra \(T\) Requin scie à long nez, eng Common sawshark, eng Doggies, eng Little sawshark, eng Longnose saw shark, eng Longnose sawshark, eng Saw dog, eng Sawshark, eng Southern saw shark

Short Description
Pristiophorus cirratus has a long, narrow, and narrowly tapering rostrum (rostrum length is 27-29% of TL), distance from rostral tip to barbels about equal or slightly greater than distance from barbels to mouth (1:1.2-1.3); distance from rostral barbels to nostrils slightly less or equal to distance from nostrils to 1st to 4th gill slits. About 9-10 large rostral teeth on each side of the rostrum in front of the barbels, 9 behind them; distance from mouth to nostrils 1.3-1.4 times internarial space. Tooth rows 39-49 in upper jaw. Dorsal and pectoral fins covered with denticles in large specimens. Lateral trunk denticles largely unicuspidate. First dorsal fin origin behind free rear tips of pectorals by eye length or more [518]. P. cirratus has a body pattern of dark blotches (mostly darker bands between pectoral fin bases, over gill slits, between spiracles and below dorsal fins) and spots (occasionally faint). Nostrils, almost circular, are situated about 2/3 way from barbels to corner or mouth, width at nostrils more than 4.5 in preoral snout in adults; preoral snout length more than 2.3 times distance from barbels to snout tip [1388]. Rostral teeth with dark margins; underside abruptly uniformly white [3538]. First dorsal fin origin behind free rear tips of pectorals by eye length or more [518]. Caudal fin almost straight, with slender upper and lower lobes; pectoral well developed but are not ray-like [1388].

Distribution
Eastern Indian Ocean: southern Australia [1388]. Does not occur in the Western Central Pacific [20050].

Human uses
fisheries: commercial

Biology
Ovoviviparous, embryos feed solely on yolk [733]. Males mature at about 97 cm, born at about 38 cm [1388]. Common sawshark lives for more than 15 years. Mature females appear to breed every 1-2 years, carrying from 3-22 young, with about 10 being the average. After 12 months"quot; gestation, the pups are born in shallow coastal areas. They are about 11-14.5 in (27-37 cm) long at birth (Ref. 48640). Found on the continental shelf and upper slope. Feeds on small fishes, including cornet fishes (Fistularia), and crustaceans.

Size / Weight / Age
137 cm TL (male/unsexed; [518]); max. reported age: 15 years [1388]

Habitat
demersal; marine; depth range 37 - 310 m [1388], usually 37 - 146 m (Ref. 54709)

Parasites (arranged by Jürgen Pollerspöck)
Monogenea
  • Calicotyle inermis WOOLCOCK, 1936 [17436]

Cestoda
Copepoda
  • Eudactylina pristiophori DEETS, 1994 [17867]