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Cirrhigaleus
''Cirrhigaleus'' is a genus of sharks in the Squalidae (dogfish) family (biology), family, which is part of the Squaliformes order. Species * ''Cirrhigaleus asper'' Nigel Merrett, Merrett, 1973 (roughskin spurdog) * ''Cirrhigaleus australis'' William Toby White, W. T. White, Peter R. Last, Last & John D. Stevens (ichthyologist), Stevens, 2007 (southern mandarin dogfish) * ''Cirrhigaleus barbifer'' Shigeho Tanaka, S. Tanaka (I), 1912 (mandarin dogfish) References * Cirrhigaleus, Shark genera Taxa named by Shigeho Tanaka {{shark-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhigaleus Barbifer
The mandarin dogfish (''Cirrhigaleus barbifer'') is a Squaliformes, dogfish, a member of the family (biology), 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 in 2011 had been identified as ''Cirrhigaleus barbifer''. History The first observation of the species outside Japanese waters can be found in record from 1912, identifying ''Cirrhigaleus barbifer'' in New Zealand waters. In 1969, a female ''Cirrhigaleus barbifer'' was long-lined in about 360 m for observation, measuring 922 mm in total length. The female was ... [...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 , while females typically measure long. The species therefore exhibits female-dominant sexual dimorphism. Dogfish sharks have slate-grey or grey-brown skin with white dots that becomes paler (almost white) around the belly region. These sharks are characterized by teeth in upper and lower jaws similar in size; a cauda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhigaleus Asper
''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) * ''Cirrhigaleus barbifer The mandarin dogfish (''Cirrhigaleus barbifer'') is a Squaliformes, dogfish, a member of the family (biology), family Squalidae in the order Squaliformes. It is found at depths of off southern Japan, Taiwan, and Indonesia (Bali and Lombok). Pop ...'' S. Tanaka (I), 1912 (mandarin dogfish) References * Shark genera Taxa named by Shigeho Tanaka {{shark-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrhigaleus
''Cirrhigaleus'' is a genus of sharks in the Squalidae (dogfish) family (biology), family, which is part of the Squaliformes order. Species * ''Cirrhigaleus asper'' Nigel Merrett, Merrett, 1973 (roughskin spurdog) * ''Cirrhigaleus australis'' William Toby White, W. T. White, Peter R. Last, Last & John D. Stevens (ichthyologist), Stevens, 2007 (southern mandarin dogfish) * ''Cirrhigaleus barbifer'' Shigeho Tanaka, S. Tanaka (I), 1912 (mandarin dogfish) References * Cirrhigaleus, Shark genera Taxa named by Shigeho Tanaka {{shark-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squaliformes
The Squaliformes are an 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 Etmoperidae 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 camouflage by co ... [...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 David Starr Jordan (January 19, 1851 – September 19, 1931) was the founding president of Stanford University, serving from 1891 to 1913. He was an ichthyologist during his research career. Prior to serving as president of Stanford Universi .... 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'' in 1909. Taxon described by him *See :Taxa named by Shigeho Tanaka References *''Kochi University Biography' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. 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 of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shark
Sharks are a group of elasmobranch cartilaginous fish characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the head. Modern sharks are classified within the Division (taxonomy), division Selachii and are the sister group to the Batoidea, Batomorphi (Batoidea, rays and skate (fish), skates). Some sources extend the term "shark" as an informal category including Extinction, extinct members of Chondrichthyes (cartilaginous fish) with a shark-like morphology, such as hybodonts. Shark-like chondrichthyans such as ''Cladoselache'' and ''Doliodus'' first appeared in the Devonian Period (419–359 million years), though some fossilized chondrichthyan-like scales are as old as the Ordovician, Late Ordovician (458–444 million years ago). The earliest confirmed modern sharks (Selachii) are known from the Early Jurassic around , with the oldest known member being ''Agaleus'', though records of true shar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) 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". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nigel Merrett
Nigel Robert Merrett (born 1940) is a British zoologist, ichthyologist, and former director of the fish section of the British Natural History Museum. In 1998, Merrett participated in an expedition headed by Nikolas Vasilyevich Parin to collect deepwater samples. 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. Taxon described by him *See :Taxa named by Nigel Merrett Taxon named in his honor * Merret's snailfish (''Careproctus merretti''), also called the snakehead snailfish is named after him. *The eel '' Ilyophis nigeli''. The species epithet Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In Taxonomy (biology), taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany) ... "''nigeli''" was given in honour of Merrett, who was credited with makin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
