Richardson's ray (Bathyraja richardsoni) is a skate of the family Arhynchobatidae, found in the Atlantic Ocean and around Cook Strait in New Zealand, at depths of from 1,300 to 2,500 m.[1] Their length can reach 1.75 m.[2] Dorsal and ventral surfaces of the disc are uniformly covered with dermal denticles, but lack thorns on the disc. The tail has 18 moderately sized thorns.[3]

Richardson's ray
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Rajiformes
Family: Arhynchobatidae
Genus: Bathyraja
Species:
B. richardsoni
Binomial name
Bathyraja richardsoni
(Garrick, 1961)

Conservation status

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The New Zealand Department of Conservation has classified the Richardson's ray as being "Not Threatened" but with the qualifier "Data Poor" under the New Zealand Threat Classification System.[4]

References

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  1. ^ Froese, Rainer; Pauly, Daniel (eds.). "Bathyraja richardsoni". FishBase. January 2006 version.
  2. ^ Ayling, Tony; Cox, Geoffrey (1982). Collins Guide to the Sea Fishes of New Zealand. William Collins Publishers Ltd, Auckland, New Zealand. ISBN 0-00-216987-8.
  3. ^ McEachrun, J.D.; Miyake, T. (1984). "Comments on the skates of the tropical Eastern Pacific: One new species and three new records". Proceedings of the Biological Society of Washington. 97: 773–787.
  4. ^ Duffy, Clinton A. J.; Francis, Malcolm; Dunn, M. R.; Finucci, Brit; Ford, Richard; Hitchmough, Rod; Rolfe, Jeremy (2016). Conservation status of New Zealand chondrichthyans (chimaeras, sharks and rays), 2016 (PDF). Wellington, New Zealand: Department of Conservation. p. 9. ISBN 9781988514628. OCLC 1042901090.