Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Classis: Chondrichthyes
Subclassis: Elasmobranchii
Infraclassis: Euselachii
Division/Cohort: Neoselachii
Subdivision/Subcohort: Batoidea
Superordo: Batomorphii
Ordo: Rhinopristiformes
Familia: Rhinobatidae
Genus: Platyrhina
Species: P. hyugaensis – P. psomadakisi – P. sinensis – P. tangi
Name
Platyrhina J. P. Müller & Henle, 1838: 90
Type species: Rhina sinensis ♀ Bloch & Schneider, 1801. Type by original designation. Also in Müller & Henle, 1838: 85
Synonyms
Analithis Gistel, 1848
Discobatus Garman, 1881: 523
References
Müller, J. & F.G.J. Henle 1838: On the generic characters of cartilaginous fishes, with descriptions of new genera. Magazine of Natural History [Charlesworth, ed.] (n.s.) 2: 33–37; 88-91.
Iwatsuki, Y. , K. Miyamoto, K. Nakaya & J. Zhang 2011: A review of the genus Platyrhina (Chondrichthys: Platyrhinidae) from the northwestern Pacific, with descriptions of two new species. Zootaxa No. 2738: 26–40. Preview
White, W.T. & Last, P.R. 2016. Platyrhina psomadakisi sp. nov., a new species of fanray (Batoidea: Platyrhinidae) from the Andaman Sea, the first record of this family in the Indian Ocean. Zootaxa 4121(5): 533–544. DOI: 10.11646/zootaxa.4121.5.3. Reference page.
Vernacular names
Ελληνικά: Πλατύρινα
English: Fanray
Platyrhina is a genus of rays in the family Platyrhinidae, containing three species. They are native to the warm-temperate to tropical marine waters in the western Pacific Ocean. They are little-known bottom-dwellers that feed on small invertebrates such as crustaceans, molluscs, and worms.[1] The fanray is found inshore to a depth of 60 m on rocky or rock sandy bottoms.[2]
Platyrhina species have rounded, heart-shaped pectoral fin discs with short, blunt snouts. Their tails are long and shark-like, slightly flattened with lateral ridges. The two dorsal fins and the caudal fin are large and rounded; the caudal fin lacks a lower lobe.[1] The teeth are small and arranged in pavement-like rows for crushing shelled prey.[citation needed] Their bodies are covered with minute dermal denticles; also, several rows of denticles are located inside the buccopharyngeal cavity. The shape of these denticles in Platyrhina and the similar Platyrhinoidis distinguish them from all other guitarfish species. Large thorns occur around the eyes and on the shoulders, and are arranged in rows along the back and tail. Unlike Platyrhinoidis, Platyrhina species have an additional lateral row of thorns on both sides of the tail, and no rostral thorns.[3]
As far as known, they are ovoviviparous, with the developing fetuses primarily sustained by large yolk sacs.[1] Research on fanrays in Ariake Bay, Japan, indicates they are faster-growing, earlier-maturing, and shorter-lived than many other ray species. Male fanrays mature at 2.1 years and females at 2.9 years; the females grow larger and more slowly than males. The maximum known age is 5 years for males and 12 years for females.[4] These rays are typically inoffensive, but care should be exercised regarding their large, sharp thorns.[1]
Species
Platyrhina hyugaensis Iwatsuki, Miyamoto & Nakaya, 2011 (Hyuga fanray)
Platyrhina sinensis Bloch & J. G. Schneider, 1801 (fanray)
Platyrhina tangi Iwatsuki, J. Zhang & Nakaya, 2011 (yellow-spotted fanray)
See also
List of prehistoric cartilaginous fish
References
Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Platyrhina in FishBase. June 2011 version.
Compagno, L.J.V. & Last, P.R. (1999). "Platyrhinidae: Thornback rays". In Carpenter, K.E. & Niem, V.H. (eds.). FAO identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Rome: Food and Agricultural Organization of the United Nations. ISBN 9251043027.
Froese, Rainer; Pauly, Daniel (eds.) (2008). "Platyrhina sinensis" in FishBase. November 2008 version.
Deynat P.P. (Jun 2005). "Characteristics of the dermal covering in Platyrhinidae (Chondrichthyes, Rhinobatiformes)". Biociências. 13 (1): 75–84.
Kume, G.; Furumitsu, K. & Yamaguchi, A. (August 2008). "Age, growth and age at sexual maturity of fan ray Platyrhina sinensis (Batoidea: Platyrhinidae) in Ariake Bay, Japan". Fisheries Science. 74 (4): 736–742. doi:10.1111/j.1444-2906.2008.01584.x.
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