Pristis zijsron

BLEEKER, 1851


Longcomb sawfish
Classification: Elasmobranchii Rhinopristiformes Pristidae

Reference of the original description
BLEEKER, P. (1851)
Vijfde bijdrage tot de kennis der ichthyologische fauna van Borneo, met beschrijving van eenige nieuwe soorten van zoetwatervisschen. Natuurkundig Tijdschrift voor Nederlandsch Indië, 2: 415-442

Synonyms / new combinations and misspellings
Pristis dubius, Pristis zisron, Pristis zyrson, Pristis zysron, Pristis zysross

Types
Pristis zijsron
Holotype: RMNH: 7418
Pristis dubius
Holotype: RMNH: D7418


Description :


Citation: Pristis zijsron BLEEKER, 1851: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 09/2016

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Pristis zijsron BLEEKER, 1851, © David Morgan, Freshwater Fish Group & Fish Health Unit, Murdoch University, Australia
Common names
fra \(T\) Requin scie, eng Dindagubba, eng Green saw fish, eng Green sawfish, eng Longcomb sawfish, eng Longsnout sawfish, eng Narrowsnout sawfish, eng Sawfish, por Tubarão-serra africano

Short Description
A large sawfish (adult at over 400 cm); rostral saw with 23 to 34 pairs of teeth. Posteriormost tooth on rostral saw just anterior to base of saw. Rostrum with sides nearly parallel posteriorly; rostrum slender, width at posteriormost tooth 7 to 10 in length to base. Rostral teeth moderately flattened, elongated, and peg or awl-like, with double edges and a groove on the posterior margin in adults but smooth and without a barb in young. Interspace between posteriormost 2 rostral teeth 2 to 7 times space between first 2 rostral teeth. No incurrent grooves on underside of snout between edges of head and nostril incurrent apertures. Nostrils short, broad and transverse, anterior nasal flaps large and broad. Pectoral fins broad-based, low and long. First dorsal fin with origin somewhat posterior to pelvic-fin origins but ahead of pelvic-fin insertions. No secondary caudal keel below the main one on the caudal-fin base. Caudal fin without a subterminal notch and with no ventral lobe. Colour: greenish brown or olive above, white below. [541].

Distribution
Indo-West Pacific: Red Sea and East Africa to Papua New Guinea, north to southern China, south to New South Wales, Australia. Source: www.gbif.org

Human uses
fisheries: commercial; gamefish: yes

Biology
Ovoviviparous, embryos feed solely on yolk [733].

Size / Weight / Age
730 cm TL (male/unsexed; [536])

Habitat
demersal; freshwater; brackish; marine; depth range 0 - 5 m [541]

Parasites (arranged by Jürgen Pollerspöck)
Cestoda
  • Floriparicapitus sp. [21566]
  • Fossobothrium perplexum BEVERIDGE & CAMPBELL, 2005 [7395]
  • Pristiorhynchus palmi SCHAEFFNER & BEVERIDGE, 2013 [17827]
  • Pterobothrium acanthotruncatum ESCALANTE & CARVAJAL, 1984 [16283] [16112] [21718]
  • Pterobothrium australiense CAMPBELL & BEVERIDGE, 1996 [16283] [16112] [21718]
  • Pterobothrium pearsoni (SOUTHWELL, 1929) [15789]