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Japanese Butterfly Ray
''Gymnura japonica'', the Japanese butterfly ray , is a species of ray Ray may refer to: Fish * Ray (fish), any cartilaginous fish of the superorder Batoidea * Ray (fish fin anatomy), a bony or horny spine on a fin Science and mathematics * Ray (geometry), half of a line proceeding from an initial point * Ray (g ... in the family Gymnuridae. It is found from Japan to Cambodia. References * Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. ''The Fishes of the Japanese Archipelago''. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559) {{Taxonbar, from=Q5017202 japonica Fish described in 1850 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batoidea
Batoidea is a superorder of cartilaginous fishes, commonly known as rays. They and their close relatives, the sharks, comprise the subclass Elasmobranchii. Rays are the largest group of cartilaginous fishes, with well over 600 species in 26 families. Rays are distinguished by their flattened bodies, enlarged pectoral fins that are fused to the head, and gill slits that are placed on their ventral surfaces. Anatomy Batoids are flat-bodied, and, like sharks, are cartilaginous fish, meaning they have a boneless skeleton made of a tough, elastic cartilage. Most batoids have five ventral slot-like body openings called gill slits that lead from the gills, but the Hexatrygonidae have six. Batoid gill slits lie under the pectoral fins on the underside, whereas a shark's are on the sides of the head. Most batoids have a flat, disk-like body, with the exception of the guitarfishes and sawfishes, while most sharks have a spindle-shaped body. Many species of batoid have developed their pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnuridae
The butterfly rays are the rays forming the genus ''Gymnura'' and the family Gymnuridae. They are found in warm oceans worldwide, and occasionally in estuaries. The body of butterfly rays is flattened and surrounded by an extremely broad disc formed by the pectoral fins, which merge in front of the head. They have a very short, thread-like, tail. They are up to in width. McEachran ''et al.'' place the butterfly rays in the subfamily Gymnurinae of the family Dasyatidae, but this article follows FishBase and ITIS in treating them as a family. Species There are currently 12 species in this genus (others are considered synonyms): * '' Gymnura altavela'' (Linnaeus, 1758) – Spiny butterfly ray * '' Gymnura australis'' ( E. P. Ramsay & Ogilby, 1886) – Australian butterfly ray * '' Gymnura crebripunctata'' ( W. K. H. Peters, 1869) – Longsnout butterfly ray * '' Gymnura japonica'' (Temminck & Schlegel, 1850) – Japanese butterfly ray * '' Gymnura marmorata'' ( J. G. Cooper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnura
The butterfly rays are the rays forming the genus ''Gymnura'' and the family Gymnuridae. They are found in warm oceans worldwide, and occasionally in estuaries. The body of butterfly rays is flattened and surrounded by an extremely broad disc formed by the pectoral fins, which merge in front of the head. They have a very short, thread-like, tail. They are up to in width. McEachran ''et al.'' place the butterfly rays in the subfamily Gymnurinae of the family Dasyatidae, but this article follows FishBase and ITIS in treating them as a family. Species There are currently 12 species in this genus (others are considered synonyms): * '' Gymnura altavela'' (Linnaeus, 1758) – Spiny butterfly ray * '' Gymnura australis'' ( E. P. Ramsay & Ogilby, 1886) – Australian butterfly ray * '' Gymnura crebripunctata'' ( W. K. H. Peters, 1869) – Longsnout butterfly ray * '' Gymnura japonica'' (Temminck & Schlegel, 1850) – Japanese butterfly ray * ''Gymnura marmorata'' ( J. G. Cooper, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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