Biology:Pale ghost shark

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Short description: Species of cartilaginous fish

Pale ghost shark
Hydrolagus bemisi (pale ghost shark).gif
Drawing by Dr Tony Ayling
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Holocephali
Order: Chimaeriformes
Family: Chimaeridae
Genus: Hydrolagus
Species:
H. bemisi
Binomial name
Hydrolagus bemisi
Didier, 2002

The pale ghost shark (Hydrolagus bemisi) is a shortnose chimaera of the family Chimaeridae. It is endemic to New Zealand waters.

Taxonomy

This species was first described by Dominique A. Didier in 2002.[1] Although it had been recognised, the description of this species was regarded as being important because of the increase in the commercial fishing of chimaera.[1]

Description

Estimations of growth and age have only been attempted for a quarter of the species known.[2] This species has a medium-sized body with a tapered whip-like tail.[3] Its length is up to 1.12 m.[4] It can be distinguished from H. novaezealandiae and H. homonycteris as it has a pale silvery colour with no patternation or spots.[3] Estimates suggest that they can live between 15 and 22 years, although the lack of data still makes this unreliable.[2]

Distribution

This species is endemic to New Zealand and can commonly be found from the West Norfolk Ridge to the Campbell Plateau at depths of between 400 and 1100 m.[3]

Conservation status

In June 2018 the New Zealand Department of Conservation classified the pale ghost shark as "Not Threatened" with the qualifier "Conservation Dependent " under the New Zealand Threat Classification System.[5]

References

  1. 1.0 1.1 Didier, Dominique A. (2002-11-01). "Two new species of chimaeroid fishes from the southwestern Pacific Ocean (Holocephali, Chimaeridae)" (in en). Ichthyological Research 49 (4): 299–306. doi:10.1007/s102280200045. ISSN 1616-3915. 
  2. 2.0 2.1 Finucci, B, Cheok, J, Ebert, DA, Herman, K, Kyne, PM, Dulvy, NK. Ghosts of the deep- Biodiversity, fisheries, and extinction risk of ghost sharks, Fish Fish. 2021; 22: 391-412. https://doi.org/10.1111/faf.12526
  3. 3.0 3.1 3.2 Roberts, Clive; Stewart, A. L.; Struthers, Carl D.; Barker, Jeremy; Kortet, Salme; Freeborn, Michelle (2015). The fishes of New Zealand. 2. Wellington, New Zealand: Te Papa Press. pp. 46. ISBN 9780994104168. OCLC 908128805. 
  4. Capuli, Estelita Emily; Luna, Susan M.. "Hydrolagus bemisi Didier, 2002". https://www.fishbase.org/summary/Hydrolagus-bemisi.html. 
  5. Duffy, Clinton A. J.; Francis, Malcolm; Dunn, M. R.; Finucci, Brit; Ford, Richard; Hitchmough, Rod; Rolfe, Jeremy (2018). Conservation status of New Zealand chondrichthyans (chimaeras, sharks and rays), 2016. Wellington, New Zealand: Department of Conservation. pp. 10. ISBN 9781988514628. OCLC 1042901090. https://www.doc.govt.nz/globalassets/documents/science-and-technical/nztcs23entire.pdf. 

Wikidata ☰ Q3469506 entry