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Cirrhigaleus
''Cirrhigaleus'' is a genus of sharks in the Squalidae (dogfish) family, which is part of the Squaliformes order. Species * ''Cirrhigaleus asper'' Merrett, 1973 (roughskin spurdog) * ''Cirrhigaleus australis'' W. T. White, Last & Stevens, 2007 (southern mandarin dogfish) http://www.mapress.com/zootaxa/2007f/z01560p030f.pdf * ''Cirrhigaleus barbifer The mandarin dogfish (''Cirrhigaleus barbifer'') is a dogfish, a member of the family Squalidae in the order Squaliformes. It is found at depths of off southern Japan, Taiwan, and Indonesia ( Bali and Lombok). Populations off Australia and ...'' S. Tanaka (I), 1912 (mandarin dogfish) References * {{Taxonbar, from=Q139320 Shark genera Taxa named by Shigeho Tanaka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhigaleus Barbifer
The mandarin dogfish (''Cirrhigaleus barbifer'') is a dogfish, a member of the family Squalidae in the order Squaliformes. It is found at depths of off southern Japan, Taiwan, and Indonesia (Bali and Lombok). Populations off Australia and New Zealand were formerly included in this species, but in 2007 these were assigned to a new species, the southern mandarin dogfish. It is not clear which of these species is involved in other populations from the tropical West Pacific. In March 2013 it was announced that two sharks caught near Rottnest Island off the coast of Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ... in 2011 had been identified as ''Cirrhigaleus barbifer''. History The first observation of the species outside Japanese waters can be found in record ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhigaleus Australis
The southern Mandarin dogfish (''Cirrhigaleus australis'') is a species of Mandarin dogfish shark in the genus ''Cirrhigaleus''. It was distinguished from ''Cirrhigaleus barbifer'', which lives in the North Pacific, on an expedition in the coral reefs near Australia in 2007. It is now known to live in the temperate waters in south-eastern Australia and from the Bay of Plenty region in New Zealand, at depths of 146–640 metres.New Mandarin shark Discovered ". Practical Fishkeeping. Retrieved on 1008-10-17. Physical characteristics It is medium-sized and robust compared to other dogfish. It is grey-brown above and pale below. The posterior margins of the |
Squalidae
Squalidae, more commonly known as dogfish, dog sharks, or spiny dogfish, are one of several families of sharks categorized under Squaliformes, making it the second largest order of sharks, numbering 119 species across 7 families. Having earned their name after a group of fishermen reportedly observed the species chasing down smaller fish in dog-like packs, dogfish have slender, streamlined bodies, usually more compact in comparison to other species, and a pointed snout. Dogfish likewise have two dorsal fins, each with smooth spines, but no anal fin, and their skin is generally rough to the touch. As the species reaches adulthood, males usually measure a maximum of 39 inches (990 mm), while females typically measure 49 inches (1,200 mm) long. The species therefore exhibits female-dominant sexual dimorphism. Dogfish sharks have slate-gray or gray-brown skin with white dots that becomes paler (almost white) around the belly region. These sharks are characterized by teeth i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhigaleus
''Cirrhigaleus'' is a genus of sharks in the Squalidae (dogfish) family, which is part of the Squaliformes order. Species * ''Cirrhigaleus asper'' Merrett, 1973 (roughskin spurdog) * ''Cirrhigaleus australis'' W. T. White, Last & Stevens, 2007 (southern mandarin dogfish) http://www.mapress.com/zootaxa/2007f/z01560p030f.pdf * ''Cirrhigaleus barbifer The mandarin dogfish (''Cirrhigaleus barbifer'') is a dogfish, a member of the family Squalidae in the order Squaliformes. It is found at depths of off southern Japan, Taiwan, and Indonesia ( Bali and Lombok). Populations off Australia and ...'' S. Tanaka (I), 1912 (mandarin dogfish) References * {{Taxonbar, from=Q139320 Shark genera Taxa named by Shigeho Tanaka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roughskin Spurdog
The roughskin spurdog (''Cirrhigaleus asper'') is a dogfish of the family Squalidae, found circumglobally between latitudes 35°N and 35°S, at depths of between and . It reaches a length of . The roughskin spurdog is ovoviviparous with 21 to 22 young in a litter. Taxonomy The roughskin spurdog was first described in 1973 as ''Squalas Asper'' by British ichthyologist Nigel Merrett Nigel Robert Merrett (born 1940) is a British zoologist and ichthyologist and former director of the fish section of the British Natural History Museum A natural history museum or museum of natural history is a scientific institution with na .... It was later quickly changed to ''Cirrhigaleus asper.'' The roughskin spurdog is also known as the roughskin dogfish and roughskin dogshark in English. References * * Compagno, Dando, & Fowler, ''Sharks of the World'', Princeton University Press, New Jersey 2005 {{Taxonbar, from=Q377622 Cirrhigaleus Fish described in 1973 Taxa named b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhigaleus Asper
The roughskin spurdog (''Cirrhigaleus asper'') is a dogfish of the family Squalidae, found circumglobally between latitudes 35°N and 35°S, at depths of between and . It reaches a length of . The roughskin spurdog is ovoviviparous with 21 to 22 young in a litter. Taxonomy The roughskin spurdog was first described in 1973 as ''Squalas Asper'' by British ichthyologist Nigel Merrett Nigel Robert Merrett (born 1940) is a British zoologist and ichthyologist and former director of the fish section of the British Natural History Museum A natural history museum or museum of natural history is a scientific institution with na .... It was later quickly changed to ''Cirrhigaleus asper.'' The roughskin spurdog is also known as the roughskin dogfish and roughskin dogshark in English. References * * Compagno, Dando, & Fowler, ''Sharks of the World'', Princeton University Press, New Jersey 2005 {{Taxonbar, from=Q377622 Cirrhigaleus Fish described in 1973 Taxa named b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squaliformes
The Squaliformes are an order (biology), order of sharks that includes about 126 species in seven families. Members of the order have two dorsal fins, which usually possess spines, they usually have a sharp head, no anal fin or nictitating membrane, and five to seven gill slits. In most other respects, however, they are quite variable in form and size. Most species of the squaliform order live in saltwater or brackish water. They are found worldwide, from northern to tropical waters, and from shallow coastal seas to the open ocean. All members of the family Eptomeridae and Dalatiidae and ''Zameus squamulosus'' possess photophores, luminous organs, and exhibit intrinsic bioluminescence. Bioluminescence evolved once in Squaliformes, approximately 111–153 million years ago, and helped the Squaliformes radiate and adapt to the deep sea. The common ancestor of Dalatiidae, Etmopteridae, Somniosidae, and Oxynotidae possessed a luminous organ and used bioluminescence for camouf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shigeho Tanaka
was a Japanese ichthyologist and professor of zoology at the Imperial University of Tokyo. He published numerous works on fishes and sharks and co-authored a book on Japanese fish with famous American scientist David Starr Jordan. Publications Jordan, D. S., S. Tanaka, and J. O. Snyder. 1913. A catalogue of the fishes of Japan. J. Coll. Sci. Imp. Univ. Tokyo, Vol. 33 (article 1): 1–497. Tribute The genus Tanakia D. S. Jordan & W. F. Thompson 1914 was named for Tanaka, as an “accomplished” ichthyologist of the Imperial University of Tokyo, who described ''Tanakia shimazui'' in 1908 and ''Pseudorhodeus tanago The Tokyo bitterling (''Tanakia tanago'') is a temperate freshwater fish of the carp family (Cyprinidae). Taxonomically, it belongs to the subfamily Acheilognathinae. The species was first described as ''Rhodeus tanago'' by Shigeho Tanaka in 1 ...'' in 1909. See also * :Taxa named by Shigeho Tanaka References *''Kochi University Biography''(in Japanes {{DEF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shark
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays. However, the term "shark" has also been used to refer to all extinct members of Chondrichthyes with a shark-like morphology, such as hybodonts and xenacanths. The oldest modern sharks are known from the Early Jurassic. They range in size from the small dwarf lanternshark (''Etmopterus perryi''), a deep sea species that is only in length, to the whale shark (''Rhincodon typus''), the largest fish in the world, which reaches approximately in length. Sharks are found in all seas and are common to depths up to . They generally do not live in freshwater, although there are a few known exceptions, such as the bull shark and the river shark, which can be found in both seawater and fresh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nigel Merrett
Nigel Robert Merrett (born 1940) is a British zoologist and ichthyologist and former director of the fish section of the British Natural History Museum A natural history museum or museum of natural history is a scientific institution with natural history collections that include current and historical records of animals, plants, fungi, ecosystems, geology, paleontology, climatology, and more. .... In 1998, Merrett participated in an expedition headed by Nikolas Vasilyevich Parin to collect deepwater specimens. Book In 1997, Merrett, along with R.L. Haedrich, wrote the book ''Deep-Sea Demersal Fish and Fisheries''. In the book, they warn against fishing in deep water. References External linksSelect publications by Nigel R. Merrett British ichthyologists Living people 1940 births {{UK-zoologist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
