Rhynchobatus is a group of rays

Batoidea

Batoidea is a superorder of cartilaginous fish commonly known as rays and skates, containing more than 500 described species in thirteen families...

 commonly known as wedgefishes, and the sole genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Rhynchobatidae. They are found in the tropical and subtropical Indo-Pacific

Indo-Pacific

The Indo-Pacific is a biogeographic region of the Earth's seas, comprising the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the seas connecting the two in the general area of Indonesia...

 with a single species in the eastern Atlantic. All species in this genus are assessed as Vulnerable

Vulnerable species

On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 Vulnerable species, subspecies and varieties, stocks and sub-populations.-References:...

 or Endangered

Endangered species

An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters...

 by IUCN.

Species

Until recently, the white-spotted guitarfish and broadnose wedgefish were considered conspecific with the giant guitarfish.

• Rhynchobatus australiae
  Rhynchobatus australiae
  Rhynchobatus australiae, also called the white-spotted guitarfish or white-spotted wedgefish, is a species of fish in the Rhynchobatidae family. It is found in Australia, Indonesia, the Philippines, and Thailand. Its natural habitats are open seas and shallow seas...
  
  Whitley
  Gilbert Percy Whitley
  Gilbert Percy Whitley was a British-born Australian ichthyologist and malacologist who was Curator of Fishes at the Australian Museum in Sydney for about 40 years. He was born at Swaythling, Southampton, England, and was educated at King Edward VI School, Southampton and Osborne House...
  
  , 1939 (White-spotted Wedgefish)
• Rhynchobatus djiddensis (Forsskål
  Peter Forsskål
  Peter Forsskål, sometimes spelled Pehr Forsskål, Peter Forskaol, Petrus Forskål or Pehr Forsskåhl, was a Swedish explorer, orientalist, naturalist and an apostle of Carl Linnaeus.-Early life:...
  
  , 1775) (Giant guitarfish)
• Rhynchobatus laevis (Bloch
  Marcus Elieser Bloch
  Marcus Elieser Bloch was a German medical doctor and naturalist. He is generally considered one of the most important ichthyologists of the 18th century.- Life :...
  
   & J. G. Schneider
  Johann Gottlob Schneider
  Johann Gottlob Theaenus Schneider was a German classicist and naturalist.-Biography:Schneider was born at Collm in Saxony...
  
  , 1801) (Smoothnose wedgefish)
• Rhynchobatus luebberti Ehrenbaum
  Ernst Ehrenbaum
  Ernst M. E. Ehrenbaum was a German biologist and oceanographer.Ehrenbaum was born in Perleberg, Province of Brandenburg, Prussia. He died in Marburg an der Lahn.- Literary works :...
  
  , 1915 (African wedgefish)
• Rhynchobatus palpebratus Compagno & Last, 2008 (Eyebrow wedgefish)
• Rhynchobatus springeri Compagno & Last, 2010 (Broadnose wedgefish)