This species was typically regarded as
(Cuvier, 1829). However that species was regarded as of unknown identity by Springer (1964). White
. (2010) also argued that that name was not made available properly.
Northern Territory, Queensland, Western Australia
Extra Distribution Information
Carnarvon, WA to Moreton Bay, QLD; tropical, east Atlantic Indo-west Pacific.
Timor Transition (1), Northern Shelf Province (25), Northwest Shelf Transition (26), Northwest Shelf Province (27), Central Western Shelf Transition (28), Central Western Shelf Province (29), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)
FAO Species Catalogue, Vol.4 Sharks of the world
Prenarial snout length 4-5.4% of total length. Teeth not well-differentiated between sexes. Total tooth rows usually 25/24. Position of 1st dorsal origin usually over or slightly in front of pectoral free rear tips. Second dorsal origin ranges from above last third of anal base to over its insertion. Length of pectoral anterior margin usually equal to or shorter than 1st dorsal length from origin to free rear tip. Total number of vertebral centra 121-162, precaudal centra 55-79. Colour grey, grey-brown or purplish brown above, pale below, pectoral fins with a light margin.
An abundant inshore and offshore shark of continental shelves, at depth of a metre or less down to about 200 m. Viviparous, with a yolk-sac placenta. Litter size 1-8. Gestation period estimated to be about a year. Maximum size 178 cm, but most adults smal
Eastern Atlantic from Madeira and Mauritania to Angola. Indo-West Pacific from South Africa and Red Sea to Pakistan, India,Malaysia, Indonesia, Thailand, China, Taiwan, Japan, the Philippines, Australia.
This is one of the most abundant species. It is caught with longline, hook-and-line, bottom trawls, and probably other gear. It utilized fresh and possibly dried salted for food and for fishmeal.
http://www.fishbase.org/Summary/speciesSummary.php?genusname=Rhizoprionodon&speciesname=acutus ---> https://www.fishbase.in/Summary/speciesSummary.php?genusname=Rhizoprionodon&speciesname=acutus https://www.fishbase.in/Summary/speciesSummary.php?genusname=Rhizoprionodon&speciesname=acutus ---> https://www.fishbase.in/summary/Rhizoprionodon-acutus.html
Eastern Atlantic: Mauritania to Angola; reported from the Gulf of Taranto (Ref.
). Indo-West Pacific: Persian Gulf (Ref.
), Red Sea and East Africa to Indonesia, north to Japan, south to Australia.
Length at first maturity / Size / Weight / Age
, range 70 - 80 cm
Max length : 175 cm TL male/unsexed; (Ref.
); 80.8 cm TL (female); common length : 110 cm TL male/unsexed; (Ref.
); max. published weight: 5.0 kg (Ref.
); max. reported age: 8 years (Ref.
: 0. A small shark with a long, narrow, snout, big eyes without notches, long labial furrows, and oblique-cusped teeth which may be smooth-edged or weakly serrated; 2nd dorsal fin small, low and behind larger anal fin; no interdorsal ridge (Ref.
). Grey or grey-brown above, white below (Ref.
). Dorsal and anal fins with dusky or blackish edges, fins slightly darker than back (Ref.
Found on continental shelves, often on sandy beaches and rarely in estuaries (Ref.
). Reported to enter freshwater and recorded several times from Cambodia as far upstream as the Great Lake (Ref.
). Occurs near the surface in shallow waters (Ref.
). Feeds mainly on small pelagic and benthic bony fishes, also cephalopods and other invertebrates (Ref.
). Viviparous (Ref.
). Utilized fresh and possibly dried salted for human consumption and for fishmeal (Ref.
). The 178 cm specimen recorded off Africa is possibly based on some other species (Ref.
Distinct pairing with embrace (Ref.
). Viviparous, with a yolk-sac placenta; 2 to 8 in a litter (Ref.
), usually 2 to 5 after a gestation period of ~ 12 months; no seasonality in the reproductive cycle (Ref.58048). Size at birth between 25 and 39 cm.
, 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref.
Preferred temperature (Ref.
): 19.6 - 28.5, mean 26.9 (based on 1463 cells).
Phylogenetic diversity index (Ref.
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00251 - 0.00437), b=3.09 (3.04 - 3.14), in cm Total Length, based on LWR estimates for this species (Ref.
Trophic Level (Ref.
): 4.3 ±0.4 se; Based on diet studies.
): Very Low, minimum population doubling time more than 14 years (K=0.2-0.6; Fec=1).
): High vulnerability (61 of 100) .
Price category (Ref.
Carpenter, Kent E.
Luna, Susan M.
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