Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Chondrichthyes Carcharhiniformes Scyliorhinidae

Scientific Name: Bythaelurus incanus
Species Authority: Last & Stevens, 2008
Common Name(s):
English Sombre Catshark
Bythaelurus sp. nov. A
Halaelurus sp. subspecies A

Originally placed under genus Halaelurus and subgenus Bythaelurus. Bythaelurus has now been elevated to generic level.

Further specimens are required to enable description of this species. The classification of this species as belonging to the genus Halaelurus also needs to be assessed as it may represent a new genus within the Scyliorhinidae (P. Last pers. comm).

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2003
Date Assessed: 2003-04-30
Needs updating
Assessor(s): White, W.T. (SSG Australia & Oceania Regional Workshop, March 2003)
Reviewer(s): Fowler, S. & Kyne, P.M. (Shark Red List Authority)
Known only from one 44 cm long immature male specimen caught on the continental slope off Ashmore Reef, northwestern Australia, in 900 m depth. It is unlikely to be caught by any fishery at this depth.
Previously published Red List assessments:
2003 Data Deficient (DD)

Geographic Range [top]

Range Description: Halaeulurus sp. nov. A is known from only one specimen caught off the continental slope off the Ashmore Reef, northwestern Australia in 900 m depth (Last and Stevens 1994). The species has only been caught from FAO Fisheries Area 57 (Indian Ocean – eastern).
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: Data deficient, this species is solely known from the continental slope off northwestern Australia in 900 m depth (Last and Stevens 1994).

Appears to attain a larger size than known members of the genus Halaelurus, with the single recorded specimen a immature male at 44 cm total length (TL) (Last and Stevens 1994).
Systems: Marine

Threats [top]

Major Threat(s): Data deficient. Probably minimal threats due to the depth they occur in.

Conservation Actions [top]

Conservation Actions: Further investigation into the range and taxonomy of this species is required.

Citation: White, W.T. (SSG Australia & Oceania Regional Workshop, March 2003). 2003. Bythaelurus incanus. The IUCN Red List of Threatened Species 2003: e.T44171A10867443. . Downloaded on 06 October 2015.
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