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Wolffish
Anarhichadidae, the wolffishes, sea wolves or wolf eels, is a family of marine ray finned fishes belonging to the order Scorpaeniformes. These are predatory, eel shaped fishes which are native to the cold waters of the Arctic, North Pacific and North Atlantic Oceans. Taxonomy Anarhichadidae was first proposed as a family in 1832 by the French zoologist Charles Lucien Bonaparte. The 5th edition of '' Fishes of the World'' classifies this family within the suborder Zoarcoidei, within the order Scorpaeniformes. Other authorities classify this family in the infraorder Zoarcales wihin the suborder Cottoidei of the Perciformes because removing the Scorpaeniformes from the Perciformes renders that taxon non monophyletic. Etymology Anarhichadidae is derived from the name of its type genus ''Anarhichas'' which is an Ancient Greek name for the Atlantic wolffish (''A. lupus'') and means "the climber", in turn derived from the Greek ''anarrhichesis'' which means "to climb or scramble up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Wolffish
The northern wolffish (''Anarhichas denticulatus''), also known as the blue sea cat or jelly cat, is a species of marine ray-finned fish belonging to the family Anarhichadidae, the wolf fishes. This species is found in the North Atlantic Ocean and Arctic Ocean. Taxonomy The Northern wolffish was first formally described in 1845 by the Danish zoologist Henrik Nikolai Krøyer with the type locality given as Greenland. The specific name means "denticulated" or "having fine teeth" alluding to the sharper, more finely pointed teeth of this species in comparison to the Atlantic wolffish (''A. lupus''). Description The northern wolffish is a robust, elongate fish with a large head, sharp snout and small eyes. The teeth are distinctive and prominent with large canine-like teeth to the front of the jaws and molar-like teeth at the back of the jaws. It does not have any pelvic fins. The overall colour of the body is greyish to dark brown with a pale purplish sheen and there are frequentl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarhichas Denticulatus
''Anarhichas'' is a genus of marine ray-finned fishes belonging to the family Anarhichadidae, the wolffishes or sea wolves. These fishes are found in the northern North Atlantic and North Pacific oceans. Taxonomy ''Anarhichas'' was first proposed as a genus by Carl Linnaeus in the 10th edition of the ''Systema Naturae'' when he described its type species ''A. lupus'', from the "northern English Ocean". The genus is one of two genera in the family Anarhichadidae, which is classified within the order Scorpaeniformes in the suborder Zoarcoidei by the 5th edition of Fishes of the World. The genus name ''Anarhichas'' is an Ancient Greek name for the Atlantic wolffish (''A. lupus'') and means “the climber,” in turn derived from the Greek ''anarrhichesis'' which means, “to climb or scramble up” , this may be an allusion to the ancient belief that wolffishes left the water and climbed up on the rocks. Species ''Anarhichas'' has four species classified within it: * '' Anarhichas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarhichas
''Anarhichas'' is a genus of marine ray-finned fishes belonging to the family Anarhichadidae, the wolffishes or sea wolves. These fishes are found in the northern North Atlantic and North Pacific oceans. Taxonomy ''Anarhichas'' was first proposed as a genus by Carl Linnaeus in the 10th edition of the '' Systema Naturae'' when he described its type species ''A. lupus'', from the "northern English Ocean". The genus is one of two genera in the family Anarhichadidae, which is classified within the order Scorpaeniformes in the suborder Zoarcoidei by the 5th edition of Fishes of the World. The genus name ''Anarhichas'' is an Ancient Greek name for the Atlantic wolffish (''A. lupus'') and means “the climber,” in turn derived from the Greek ''anarrhichesis'' which means, “to climb or scramble up” , this may be an allusion to the ancient belief that wolffishes left the water and climbed up on the rocks. Species ''Anarhichas'' has four species classified within it: * ''Anarhic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarhichas Minor
''Anarhichas minor'', the spotted wolffish, spotted sea cat or leopardfish, is a large marine fish of the family Anarhichadidae. This bottom-dwelling species is found across the North Atlantic and adjacent parts of the Arctic Ocean from north of Russia and the Scandinavian Peninsula to the Scotian Shelf, off Nova Scotia, Canada. In Canada the population declined by about 90% from the late 1970s through the early 1990s, particularly in the northern part of its range. In Canada it is classified as a threatened species. Taxonomy ''Anarhichas minor'' was first formally described in 1772 by the Icelandic explorer, writer and conservator of the Icelandic language Eggert Ólafsson with the type locality given as Iceland. It is one of four species of wolffishes in the genus ''Anarhichas''. The specific name ''minor'' should mean "smaller" or "lesser", however Olafsson meant it to be "latter" as this was the second wolffish species to be described. General description They have promi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarhichas Orientalis
''Anarhichas orientalis'', the Bering wolffish, is a marine fish in the family Anarhichadidae, the "wolffish". Description The Bering wolffish has an elongate and laterally compressed body, with a thin caudal peduncle. It has a steep snout, and, like other wolffish, has long, canine teeth that protrude out past the tips of the jaws. It can grow to 112 cm and 15 kg in weight, is dark brown in colour and lacks any distinct markings other than some slight blotching or palish marbling. The head of juveniles may have multiple dark spots and four to five dark coloured longitudinal stripes on the upper body. The head length is approximately 19 to 21 percent of the total body length. This species differs from the five other species in the genus in having at least 53 anal rays, 81 to 86 dorsal fin spines, and more rounded, deeper caudal fins. Distribution The Bering wolffish species has an inconsistent distribution. It is found from the Northeastern Pacific Ocean from Hokkai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoarcoidei
Zoarcoidei is a suborder of marine ray-finned fishes belonging to the order Scorpaeniformes. The suborder includes the wolffishes, gunnels and eelpouts. The suborder includes about 400 species. These fishes predominantly found in the boreal seas of the northern hemisphere but they have colonised the southern hemisphere. Taxonomy Zoarcoidei was first proposed as a taxonomic grouping by the American zoologist Theodore Gill in 1893 as the superfamily Zoarceoidea. The 5th edition of '' Fishes of the World'' classifies the Zoarcoidei as a suborder within the order Scorpaeniformes. Other authorities classify this taxon as the infraorder Zoarcales wihin the suborder Cottoidei of the Perciformes because removing the Scorpaeniformes from the Perciformes renders that taxon non monophyletic. The monophyly of this grouping has still not been fully ascertained but it is generally accepted that the most basal family is Bathymasteridae. Timeline ImageSize = width:1000px height:auto ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarrhichthys Ocellatus
The wolf eel (''Anarrhichthys ocellatus'') is a species of marine ray-finned fish belonging to the family Anarhichadidae, the wolf fishes. It is found in the North Pacific Ocean. Despite its common name and resemblance, it is not a true eel. It is the only species in the monotypic genus ''Anarrhichthys''. Taxonomy The wolf eel was first formally described in 1855 by the American physician and ichthyologist William Orville Ayres with the type locality given as San Francisco Bay in California. It is the only species in the monotypic genus ''Anarrichthys'', which was also described by Ayres in 1855. This is one of two genera in the family Anarhichadidae, the other being ''Anarhichas''. Etymology The Wolf eel’s genus name ''Anarrhichthys'' combines the wolffish genus ''Anarhichas'', as this taxon has a similar head shape to the wolffishes, and ''ichthys'', which means “fish”. The specific name ''ocellatus'' means “ocellated”, a reference to the eye like spots, or ocell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarrhichthys
The wolf eel (''Anarrhichthys ocellatus'') is a species of marine ray-finned fish belonging to the family Anarhichadidae, the wolf fishes. It is found in the North Pacific Ocean. Despite its common name and resemblance, it is not a true eel. It is the only species in the monotypic genus ''Anarrhichthys''. Taxonomy The wolf eel was first formally described in 1855 by the American physician and ichthyologist William Orville Ayres with the type locality given as San Francisco Bay in California. It is the only species in the monotypic genus ''Anarrichthys'', which was also described by Ayres in 1855. This is one of two genera in the family Anarhichadidae, the other being ''Anarhichas''. Etymology The Wolf eel’s genus name ''Anarrhichthys'' combines the wolffish genus ''Anarhichas'', as this taxon has a similar head shape to the wolffishes, and ''ichthys'', which means “fish”. The specific name ''ocellatus'' means “ocellated”, a reference to the eye like spots, or ocell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
10th Edition Of Systema Naturae
The 10th edition of ''Systema Naturae'' is a book written by Swedish naturalist Carl Linnaeus and published in two volumes in 1758 and 1759, which marks the starting point of zoological nomenclature. In it, Linnaeus introduced binomial nomenclature for animals, something he had already done for plants in his 1753 publication of '' Species Plantarum''. Starting point Before 1758, most biological catalogues had used polynomial names for the taxa included, including earlier editions of ''Systema Naturae''. The first work to consistently apply binomial nomenclature across the animal kingdom was the 10th edition of ''Systema Naturae''. The International Commission on Zoological Nomenclature therefore chose 1 January 1758 as the "starting point" for zoological nomenclature, and asserted that the 10th edition of ''Systema Naturae'' was to be treated as if published on that date. Names published before that date are unavailable, even if they would otherwise satisfy the rules. The only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. For some groups of organisms, their orders may fol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarhichas Lupus
Lupus, technically known as systemic lupus erythematosus (SLE), is an autoimmune disease in which the body's immune system mistakenly attacks healthy tissue in many parts of the body. Symptoms vary among people and may be mild to severe. Common symptoms include painful and swollen joints, fever, chest pain, hair loss, mouth ulcers, swollen lymph nodes, feeling tired, and a red rash which is most commonly on the face. Often there are periods of illness, called flares, and periods of remission during which there are few symptoms. The cause of SLE is not clear. It is thought to involve a combination of genetics and environmental factors. Among identical twins, if one is affected there is a 24% chance the other one will also develop the disease. Female sex hormones, sunlight, smoking, vitamin D deficiency, and certain infections are also believed to increase a person's risk. The mechanism involves an immune response by autoantibodies against a person's own tissues. These are m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
