Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Chondrichthyes Rajiformes Rhinobatidae

Scientific Name: Rhinobatos sainsburyi
Species Authority: Last, 2004
Common Name(s):
English Goldeneye Shovelnose Ray

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2003
Date Assessed: 2003-04-30
Needs updating
Assessor(s): McAuley, R. (SSG Australia & Oceania Regional Workshop, March 2003)
Reviewer(s): Fowler, S., Kyne, P.M. & Cavanagh, R.D. (Shark Red List Authority)
A little known common shovelnose ray endemic to northwestern Australia. Occurs in coastal waters, within the depth range of some small prawn and fish trawl fisheries. It is a known bycatch of the Pilbara Fish Trawl (PFT) Fishery, but is of negligible commercial value due to its small, low value fins, low recovery of saleable flesh and lack of markets. Is known to be discarded alive in the PTF and is likely to have a high survival rate. Possibly has a wider distribution than is currently known.
Previously published Red List assessments:
2003 Least Concern (LC)

Geographic Range [top]

Range Description: Two sympatric forms, which differ in their colour patterns but with identical vertebral counts and shape (Last and Stevens 1994). Their relationship requires further study. Australian Endemic. North West Shelf and Kimberley regions of Western Australia. Distribution possibly wider than reported due to the limited number of surveys of elasmobranch fauna in the area.
Countries occurrence:
Australia (Western Australia)
FAO Marine Fishing Areas:
Indian Ocean – eastern
Range Map: Click here to open the map viewer and explore range.

Population [top]

Current Population Trend: Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: Very little is known about the life history characteristics of this species, however, they grow to at least 56 cm total length (TL) but males mature at about 55 cm TL, suggesting a larger maximum size. Presumably reproduce ovoviviparously and likely to feed on benthic invertebrates.
Systems: Marine

Threats [top]

Major Threat(s): Is a known discarded bycatch in the Pilbara Fish Trawl Fishery (Stephenson and Chidlow, draft report). Occurs outside the geographic range of the major prawn trawl fishery in the area but its range might overlap if it is distributed further north than currently reported. If so, it is also likely to be discarded as it is of little commercial value and usually discarded alive.

Conservation Actions [top]

Conservation Actions: Turtle Exclusion Devices are unlikely to prevent capture in trawl nets due to their small size.

Citation: McAuley, R. (SSG Australia & Oceania Regional Workshop, March 2003). 2003. Rhinobatos sainsburyi. The IUCN Red List of Threatened Species 2003: e.T42721A10748371. . Downloaded on 08 October 2015.
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