Elasmobranchii (sharks and rays) >
Pristiophoriformes (Saw sharks) >
Pristiophoridae (Saw sharks)
Etymology: Pristiophorus: pristio-, presumably derived from prio (Gr.), to saw, but treated here as a noun (a saw); phorus, from phoreus (Gr.), bearer or carrier, referring to saw-like snout (note also that pristis is Greek for sawfish) (See ETYFish); delicatus: Latin for dainty or delicate, referring to fine, delicate rostral teeth on elongated rostrum (See ETYFish).
More on authors: Yearsley, Last & White.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; pelagic-oceanic; depth range 246 - 405 m (Ref. 76934). Tropical
Western Pacific: Australia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 62.5 cm TL male/unsexed; (Ref. 76934); 84.5 cm TL (female)
Short description
Identification keys | Morphology | Morphometrics
This small species possess the following characters: nostril to barbel origin is 3.2-3.7 times mouth to nostril; prenasal length 1.7-1.8 times the prebarbel length; preoral length 2.1-2.4 times the interdorsal space; pectoral anterior margin 1.2-1.5 times the dorsal-caudal space; dorsal caudal margin 4.4-5.0 times caudal fin depth; width of mouth 2.7-3.7 times the length spiracle; color dorsally pale to medium yellowish brown, ventrally pale whitish to yellowish; 49-55 monospondylous centra; 50-54 precaudal diplospondylous centra; 149-156 total vertebral centra (Ref. 76934).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Yearsley, G.K., P.R. Last and W.T. White, 2008. A new species of sawshark, Pristiophorus delicatus sp. nov. (Pristionphoriformes: Pristiophoridae), from Northeastern Australia. pp. 23-33. 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. 76934)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Tools
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Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 8.8 - 18.9, mean 13 °C (based on 19 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (54 of 100).
