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Channa Royi
''Channa royi'', the Andaman emerald snakehead, is a species of snakehead fish endemic to the Andaman and Nicobar Islands of India. This dwarf snakehead is distinct from other snakehead species due to its differing coloration, number of vertebrae, and teeth, most notably its greenish-gray dorsum. It was only scientifically described in 2018 and its closest relative is the Burmese snakehead (''C. hartcourtbutleri''), and a review in 2019 argued that the two are synonyms. If recognized as its own species, it is only known from the South, Middle, and North Andaman North Andaman Island is the northern island of Great Andaman of the Andaman Islands. It belongs to the North and Middle Andaman administrative district, part of the Indian union territory of Andaman and Nicobar Islands. the island is lying ... islands, and is abundant in clear, slow-flowing water with rocks and little vegetation, such as ditches, ponds, and hill streams. The specific name honours the fisher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (biology)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia leva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Channa
''Channa'' is a genus of predatory fish in the family Channidae, commonly known as snakeheads, native to freshwater habitats in Asia. This genus contains about 50 scientifically described species. The genus has a wide natural distribution extending from Iraq in the west, to Indonesia and China in the east, and parts of Siberia in the Far East. A particularly high richness of species exists in Myanmar (Burma) and northeastern India, and many ''Channa'' species live nowhere else. In contrast, a few widespread species have been introduced to several regions outside their natural range, where they often become invasive. The large and medium-sized ''Channa'' species are among the most common staple food fish in several Asian countries, and they are extensively cultured.Kumar, K., R. Kumar, S. Saurabh, M. Sahoo, A.K. Mohanty, P.L. Lalrinsanga, U.L. Mohanty and P. Jayasankar (2012). Snakehead Fishes: Fact Sheets. Central Institute of Freshwater Aquaculture, Bhubaneswar. Apart from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of The Andaman Islands
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Name (zoology)
In zoological nomenclature, the specific name (also specific epithet or species epithet) is the second part (the second name) within the scientific name of a species (a binomen). The first part of the name of a species is the name of the genus or the generic name. The rules and regulations governing the giving of a new species name are explained in the article species description. For example, the scientific name for humans is ''Homo sapiens'', which is the species name, consisting of two names: ''Homo'' is the " generic name" (the name of the genus) and ''sapiens'' is the "specific name". Historically, ''specific name'' referred to the combination of what are now called the generic and specific names. Carl Linnaeus, who formalized binomial nomenclature, made explicit distinctions between specific, generic, and trivial names. The generic name was that of the genus, the first in the binomial, the trivial name was the second name in the binomial, and the specific the proper term for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Andaman Island
North Andaman Island is the northern island of Great Andaman of the Andaman Islands. It belongs to the North and Middle Andaman district, North and Middle Andaman administrative Districts of India, district, part of the Indian union territory of Andaman and Nicobar Islands. the island is lying north from Port Blair. Geography The island belongs to the Great Andaman group and lies north of Middle Andaman Island. many small island groups surround its beaches. The island's main town is Diglipur. The island previously had an indigenous population of the Great Andamanese, for example, the Bo, but they are no longer present: the island is populated by immigrants from the Indian mainland and their descendants. The island is home to the highest point in the archipelago, Saddle Peak (Andaman Islands), Saddle Peak at 731 metres. North Andaman has fairly frequent large earthquakes, and suffered inundation from the 2004 Indian Ocean earthquake tsunami. Administration The entire island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Andaman Island
Middle Andaman Island is an island of the Andaman Islands. It belongs to the North and Middle Andaman administrative district, part of the Indian union territory of Andaman and Nicobar Islands. Geography The island belongs to the Great Andaman Chain and is located north from Port Blair. It is the central island of the Great Andaman archipelago of India, with a total area of 1,536 km². Middle Andaman is separated from North Andaman Island by Austen Strait, and from Baratang Island at the south by Homfray's Strait, both shallow and narrow channels, a few hundred metres wide; and from Interview Island at its west by the navigable Interview Passage.Edgar Thorpe, Showick Thorpe (2011) The Pearson CSAT Manual 2011'. Accessed on 2012-07-26 The island's coastline was inundated by the tsunami resulting from the 26 December 2004 Indian Ocean earthquake, though the effect was far less severe when compared with other Islands of Andaman and Nicobar Islands. Administration Pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Andaman Island
South Andaman Island is the southernmost island of the Great Andaman and is home to the majority of the population of the Andaman Islands. It belongs to the South Andaman administrative district, part of the Indian union territory of Andaman and Nicobar Islands. It is the location of Port Blair, capital of the Andaman and Nicobar Islands. History South Andaman Island was struck by the 2004 Indian Ocean earthquake, leading to many deaths on the island. Geography The island belongs to the Great Andaman Chain. Some areas of the island are restricted areas for non-Indians; however, transit permits can be obtained from the Home Ministry. South Andaman is the third largest island in the island group. It is located immediately south of Middle Andaman Island and Baratang, from which it is separated only by a narrow channel, a few hundred meters wide. The island is long and at its widest part. Its area is . South Andaman is less mountainous than the more northerly of the Andaman Isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmese Snakehead
''Channa harcourtbutleri'', the Burmese snakehead, is a species of snakehead endemic to Inle Lake and surroundings in Myanmar. Locally called ''nga ohn-ma'', among aquarists it is considered one of the dwarf snakeheads, but no significant import for aquarists is known. It is one of the smaller species of snakehead and has a standard length of up to . The specific name honors Sir Harcourt Butler, a British governor in the region. This was for a long time considered to be a junior synonym of '' Channa gachua''. In fact, both species closely resemble each other. The article on its revalidation only mentions three discriminating features, such as the missing ocellus in the dorsal fin of a juvenile ''Channa harcourtbutleri''. It is suspected to be a mouthbrooder and eats a wide range of foods, including arthropods and small fish, but unlike in some relatives, no frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snakehead (fish)
The snakeheads are members of the freshwater perciform fish family Channidae, native to parts of Africa and Asia. These elongated, predatory fish are distinguished by their long dorsal fins, large mouths, and shiny teeth. They breathe air with gills, which allows them to migrate short distances over land. They have suprabranchial organs, which are primitive forms of labyrinth organs, that develop when they grow older. The two extant genera are ''Channa'' in Asia and ''Parachanna'' in Africa, consisting of more than 50 species. They are valuable as a food source and have become notorious as an intentionally released invasive species. These fish have been kept as pets but as they get larger, people let them go into ponds, lakes, and rivers, making these fish invasive. Description The various species of snakeheads differ greatly in size; dwarf snakeheads, such as ''Channa orientalis'', do not surpass in length. Most other snakeheads reach between . Five species ('' C. argus'', ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientifically Described
A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have been described previously or are related. In order for species to be validly described, they need to follow guidelines established over time. Zoological naming requires adherence to the ICZN code, plants, the ICN, viruses ICTV, and so on. The species description often contains photographs or other illustrations of type material along with a note on where they are deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million species have been identified and described, out of some 8.7 million that may actually exist. Millions more have become extinct throughout the existence of life on Earth. Naming process A name of a new species becomes valid (available in zool ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsum (anatomy)
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal. Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that is radially symmetrical will have no anterior surface, but can still have a description that a part is close to the middle ("proximal") or further from the middle ("distal"). International organisations have determined vocabularies that are often used as standard vocabularies for subdisciplines of anatom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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