Biology:False shark ray

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Short description: Species of cartilaginous fish

False shark ray
CITES Appendix II (CITES)[1]
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Batoidea
Order: Rhinopristiformes
Family: Rhinidae
Genus: Rhynchorhina
Séret & Naylor, 2016
Species:
R. mauritaniensis
Binomial name
Rhynchorhina mauritaniensis
Séret & Naylor, 2016

The false shark ray (Rhynchorhina mauritaniensis) is a species of fish in the Rhinidae family and the only species in the genus Rhynchorhina.[2] This rare ray is only known from shallow coastal Atlantic waters in Banc d’Arguin, Mauritania.[2][3][4]

The upperparts of the false shark ray are greyish or greenish-brown and densely covered in white spots.[3] The largest known reliably measured specimen was 2.24 m (7.3 ft) long, but individuals about 2.75 m (9 ft) have been seen.[2] Overall it resembles the African wedgefish (Rhynchobatus luebberti) found in the same region, but it has a blunt rounded snout somewhat like the shark ray or bowmouth guitarfish (Rhina ancylostoma) of the Indo-Pacific. The genus name Rhynchorhina (Rhyncho+rhina) is a reference to this "mix" of features.[2]

Although long known by the local Imraguen people, the first record confirmed by scientists was in 1998 and it only received its species description in 2016.[2]

Very little is known about the behavior of the false shark ray, but a 2-metre (6.6 ft) female caught in February had ripe ovocytes and shrimp in the stomach, while another had moray eels in the stomach.[2]

References

  1. "Appendices | CITES". https://cites.org/eng/app/appendices.php. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Séret, B.; G. Naylor (2016). "Rhynchorhina mauritaniensis, a new genus and species of wedgefish from the eastern central Atlantic (Elasmobranchii: Batoidea: Rhinidae)". Zootaxa 4138 (2): 291–308. doi:10.11646/zootaxa.4138.2.4. PMID 27470765. 
  3. 3.0 3.1 Last, ed (2016). Rays of the World. CSIRO. p. 76. ISBN 9780643109148. 
  4. "Rhynchorhina mauritaniensis Séret & Naylor, 2016". Shark References. http://shark-references.com/species/view/Rhynchorhina-mauritaniensis. Retrieved 6 July 2017. 

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