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Rhodichthys Regina
The threadfin seasnail (''Rhodichthys regina'') is a species of snailfish native to the Arctic Ocean and the northeastern Atlantic Ocean, and may also be found in the North Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is bounded by the contine .... It has been found at depths of from . This species grows to a length of SL. Description It has no commercial value. References Liparidae Taxa named by Robert Collett {{Liparidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Collett
Robert Collett (2 December 1842 – 27 January 1913) was a Norway, Norwegian zoologist. Collett was director and curator of the Natural History Museum at the University of Oslo, Zoological Museum at University of Oslo. Robert Collett was born at Oslo, Christiania (now Oslo), Norway. He was the eldest child of Professor Peter Jonas Collett (1813–51) and Camilla Collett (1813–95). His maternal uncles included Joseph Frantz Oscar Wergeland, Oscar and Henrik Wergeland, and his paternal uncles included Peter Severin Steenstrup. He had three younger brothers, including the writer and historian, Alf Collett. He never married.Robert Collett University of Oslo He attended the Latin School in Lillehammer and was a fellow in zoology at the University of Oslo. From 1864 he was curator at the Natural History Museum at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
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. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists 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. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snailfish
The snailfishes or sea snails (not to be confused with invertebrate sea snails), are a family of marine ray-finned fishes. These fishes make up the Liparidae, a family classified within the order Scorpaeniformes. Widely distributed from the Arctic to Antarctic Oceans, including the oceans in between, the snailfish family contains more than 30 genera and about 410 described species, but there are also many undescribed species. Snailfish are found at depths ranging from shallow coastal waters to more than , including in seven ocean trenches. Taxonomy The snailfish family, Liparidae, was first proposed by the American biologist Theodore Gill in 1861. The 5th edition of ''Fishes of the World'' classifies this family within superfamily Cyclopteroidea, part of the suborder Cottoidei of the order Scorpaeniformes. Other authorities do not recognise this superfamily and classify the two families within it, Cyclopteridae and Liparidae, within the infraorder Cottales alongside the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Ocean
The Arctic Ocean is the smallest and shallowest of the world's five oceanic divisions. It spans an area of approximately and is the coldest of the world's oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, although some oceanographers call it the Arctic Mediterranean Sea. It has also been described as an estuary of the Atlantic Ocean. It is also seen as the northernmost part of the all-encompassing world ocean. The Arctic Ocean includes the North Pole region in the middle of the Northern Hemisphere and extends south to about 60°N. The Arctic Ocean is surrounded by Eurasia and North America, and the borders follow topographic features: the Bering Strait on the Pacific side and the Greenland Scotland Ridge on the Atlantic side. It is mostly covered by sea ice throughout the year and almost completely in winter. The Arctic Ocean's surface temperature and salinity vary seasonally as the ice cover melts and freezes; its salinity is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Ocean
The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for separating the New World of the Americas (North America and South America) from the Old World of Afro-Eurasia (Africa, Asia, and Europe). Through its separation of Afro-Eurasia from the Americas, the Atlantic Ocean has played a central role in the development of human society, globalization, and the histories of many nations. While the Norse colonization of North America, Norse were the first known humans to cross the Atlantic, it was the expedition of Christopher Columbus in 1492 that proved to be the most consequential. Columbus's expedition ushered in an Age of Discovery, age of exploration and colonization of the Americas by European powers, most notably Portuguese Empire, Portugal, Spanish Empire, Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is bounded by the continents of Asia and Australia in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), the Pacific Ocean is the largest division of the World Ocean and the hydrosphere and covers approximately 46% of Earth's water surface and about 32% of the planet's total surface area, larger than its entire land area ().Pacific Ocean . ''Encyclopædia Britannica, Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the Land and water hemispheres, water hemisphere and the Western Hemisphere, as well as the Pole of inaccessi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Measurement
Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology. Overall length Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. This measurement excludes the length of the caudal (tail) fin. Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes ( lampreys) and usually Elasmobranchii (shark Sharks are a group of elasmobranch cartilaginous fish characterized by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liparidae
The snailfishes or sea snails (not to be confused with invertebrate sea snails), are a family of marine ray-finned fishes. These fishes make up the Liparidae, a family classified within the order Scorpaeniformes. Widely distributed from the Arctic to Antarctic Oceans, including the oceans in between, the snailfish family contains more than 30 genera and about 410 described species, but there are also many undescribed species. Snailfish are found at depths ranging from shallow coastal waters to more than , including in seven ocean trenches. Taxonomy The snailfish family, Liparidae, was first proposed by the American biologist Theodore Gill in 1861. The 5th edition of ''Fishes of the World'' classifies this family within superfamily Cyclopteroidea, part of the suborder Cottoidei of the order Scorpaeniformes. Other authorities do not recognise this superfamily and classify the two families within it, Cyclopteridae and Liparidae, within the infraorder Cottales alongside the sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
