Rhizoprionodon oligolinx 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Chondrichthyes Carcharhiniformes Carcharhinidae

Scientific Name: Rhizoprionodon oligolinx Springer, 1964
Common Name(s):
English Grey Sharpnose Shark
Taxonomic Source(s): Springer, V.G. 1964. A revision of the carcharhinid shark genera Scoliodon, Loxodon and Rhizoprionodon. Proceedings of the United States National Museum 115(3493): 559-632.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2003
Date Assessed: 2003-04-30
Needs updating
Assessor(s): Simpfendorfer, C.A. (SSG Australia & Oceania Regional Workshop, March 2003)
Reviewer(s): Fowler, S. & Cavanagh, R.D. (Shark Red List Authority)
This is an abundant inshore species across southern Asia, from the Arabian Gulf at least to northern Australia, possibly southern Japan. It is exploited by artisanal, subsistence and commercial fisheries throughout its range, including gillnet, trawl and longline fisheries. In parts of its range exploitation rates are relatively high. However, it is assumed to have a productive life history, like those of better-known species in this genus which enables it to sustain relatively high levels of fishing pressure.

Geographic Range [top]

Range Description:This species occurs from the Arabian Gulf to the Gulf of Carpentaria in northern Australia and possibly southern Japan in inshore continental shelf waters.
Countries occurrence:
Australia (Northern Territory, Queensland); Cambodia; India; Indonesia; Iran, Islamic Republic of; Malaysia; Pakistan; Palau; Singapore; Sri Lanka; Thailand
FAO Marine Fishing Areas:
Indian Ocean – western; Indian Ocean – eastern; Pacific – northwest; Pacific – western central
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are little or no data available on population size anywhere within its range, and there are no indices of trends in population abundance. It is known only from a limited number of specimens from northern Australia, where it is probably rare, and may be a stray from Indonesian waters.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:The biology of this species is poorly known. However, it is likely to have a life history very similar to the Australian sharpnose shark (Rhizoprionodon taylori) which grows to a similar size and has a similar appearance. It is a small shark born at 21 to 26 cm, mature at 35 to 40 cm, and grows to around 70 cm (Last and Stevens 1994). Mature females produce litters of 3 to 5 young, presumably every year (Compagno 1984). Assuming that the life history is similar to that of R. taylori it is assumed to be productive and able to sustain relatively high levels of fishing pressure.

Threats [top]

Major Threat(s): This species is probably exploited by inshore artisanal, subsistence and commercial fisheries through most of its range. Manjaji (2002) reported it from fish markets in Sabah. No data are available on the magnitude of catches or the impact of fishing on the populations.

Conservation Actions [top]

Conservation Actions: There are currently no conservation measures in place for this species.

Classifications [top]

9. Marine Neritic -> 9.1. Marine Neritic - Pelagic
10. Marine Oceanic -> 10.1. Marine Oceanic - Epipelagic (0-200m)

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
5. Biological resource use -> 5.4. Fishing & harvesting aquatic resources -> 5.4.3. Unintentional effects: (subsistence/small scale) [harvest]
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

5. Biological resource use -> 5.4. Fishing & harvesting aquatic resources -> 5.4.4. Unintentional effects: (large scale) [harvest]
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

Bibliography [top]

Compagno, L.J.V. 1984. FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. FAO Fisheries Synopsis No. 125, Volume 4, Part 1.

IUCN. 2003. 2003 IUCN Red List of Threatened Species. Downloaded on 18 November 2003.

IUCN SSC Shark Specialist Group. Specialist Group website. Available at:

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

Manjaji, B.M. 2002. New records of elasmobranch species from Sabah. In: S.L. Fowler, T.M. Reed and Dipper, F.A. (eds) Elasmobranch biodiversity, conservation and management. Proceedings of the International Seminar and Workshop, Sabah, Malaysia, July 1997. pp. 70–77. Occasional paper of the IUCN Species Survival Commission No. 25.

Citation: Simpfendorfer, C.A. (SSG Australia & Oceania Regional Workshop, March 2003). 2003. Rhizoprionodon oligolinx. The IUCN Red List of Threatened Species 2003: e.T41851A10580149. . Downloaded on 24 June 2018.
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