Bowmouth guitarfish
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| Bowmouth guitarfish | ||||||||||||||||
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| Rhina ancylostoma Bloch & Schneider, 1801 |
The bowmouth guitarfish, bowmouth wedgefish, or shark ray[1] (Rhina ancylostoma) is a member of the order of Rajiformes, being related to skates and rays. It is the only member of the genus Rhina.
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[edit] Range
Red Sea, East Africa to Papua New Guinea, north to Japan, south to Australia.[2]
[edit] Description
It is a large fish, growing up to 2.7m long and weighing up to 135kg. The snout is round, and a spiny medial ridge runs down the body with lesser lateral ridges and thorns over the eyes, on the back and shoulders. The jaws have undulating ridges of crushing teeth. It is white underneath and grey or brown above with many white spots on the body, fins and tail and black spots on the head. It is ovoviviparous.It does not have the distinctive ocelli of the giant guitarfish.[2][3]
[edit] Diet
The bowmouth guitarfish feeds on shrimps, crabs and shellfish.[2][3]
[edit] Habitat
Reported between 3m and 90m depth, the bowmouth guitarfish is usually found on the sea floor where it is muddy or sandy but may swim above it. The areas it inhabits are often close inshore, associated with coral reefs and mangroves.[2][3]
[edit] Interaction with man
The bowmouth guitarfish may be caught in trawls but is difficult to handle and may damage the catch. Only the pectoral fins are eaten; these are preserved by salting or drying or used fresh. It is listed as vulnerable on the IUCN red list.[2] A few are in public aquariums, such as the Adventure Aquarium. Many believe this particular species of fish to have been caught by Russian fishermen, and eaten, but not until after taking a video of the fish with a cell phone, then became the internet phenomenon known as the "Russian Alien Fish". The first breeding program for these is at the Newport Aquarium in Kentucky, USA. The two specimen are female "Sweet Pea" and male "Scooter".
[edit] References
- ^ NJ Adventure Aquarium - article identifies species as shark ray
- ^ a b c d e "Rhina ancylostoma". FishBase. Ed. Ranier Froese and Daniel Pauly. 7 2007 version. N.p.: FishBase, 2007.
- ^ a b c Lieske, E. and Myers, R.F. (2004) Coral reef guide; Red Sea London, HarperCollins ISBN 0-00-715986-2
