Guitarfish

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Guitarfishes
Shovelnose guitarfish, Rhinobatos productus
Shovelnose guitarfish, Rhinobatos productus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Rajiformes
Family: Rhinobatidae
Müller & Henle, 1837
Genera

See text.

The guitarfish is known for an elongated body with a flattened head and trunk and small raylike wings. They are mainly found in tropical and temperate waters, traveling in large schools. Most adult guitarfishes reach five or six feet in length, though the Indo-Pacific Rhynchobatus djiddensis can weigh 225 kilogrammes (500 pounds) and grow to 3 metres (ten feet) in length. These fish are bottom feeders, preferring small crustaceans. Their teeth are small and numerous, usually arranged in 65 or 70 rows. Guitarfishes are ovoviviparous, with the young hatching out of the eggs before leaving the mother's body.[1]

The guitarfishes are a family, Rhinobatidae, of rays.

Notable species include the Shovelnose guitarfish, Rhinobatos productus, and the Bowmouth guitarfish, Rhina ancylostoma.

The taxonomy of this group is highly uncertain. Some taxonomists put Rhinobatidae in its own order, Rhinobatiformes; others place it in the order Myliobatiformes with the eagle rays and their relatives.

In some classifications the family is split into three, with the genus Rhina in the family Rhinidae, and the genus Rhynchobatus in the family Rhynochobatidae (or these two genera may be classified together). These families may be raised to the level of orders: Rhiniformes and Rhynchobatiformes, respectively.

This article follows FishBase in including about fifty species in ten genera:[2]

Wikispecies has information related to:
  1. ^ John Farrand Jr., The Audubon Society Encyclopedia of Animal Life, 1982
  2. ^ "Rhinobatidae". FishBase. Ed. Ranier Froese and Daniel Pauly. August 2005 version. N.p.: FishBase, 2005.
  3. ^ Last, White & Fahmi 2006 (2006). "Rhinobatos jimbaranensis and R. penggali, two new shovelnose rays (Batoidea: Rhinobatidae) from eastern Indonesia.". Cybium 30 (3): 262ff.. 
  4. ^ Peter R. Last, Leonard J.V. Compagno and Kazuhiro Nakaya (2004). "Rhinobatos nudidorsalis, a new species of shovelnose ray (Batoidea: Rhinobatidae) from the Mascarene Ridge, central Indian Ocean". Ichthyological Research 51 (2): 153–158. doi:10.1007/s10228-004-0211-0. 
  5. ^ Last, White & Fahmi 2006 (2006). "Rhinobatos jimbaranensis and R. penggali, two new shovelnose rays (Batoidea: Rhinobatidae) from eastern Indonesia.". Cybium 30 (3): 262ff.. 

Retrieved from "http://en.wikipedia.org/wiki/Guitarfish"
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