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Danionella
''Danionella'' is a genus of danionin fish found in freshwater habitats in Myanmar and West Bengal, India. It includes some of the smallest fishes. Distribution Four out of five described species of ''Danionella'' are found in Myanmar. ''D. translucida'' is described from the Ayeyarwady River basin, and ''D. mirifica'' was described from the Kamaing area in upper Myanmar. '' Danionella priapus'' is endemic to India. Description When first described, ''Danionella translucida'' was the smallest ostariophysan and the smallest adult vertebrate to inhabit fresh water. Its adult size ranges from 10–12 millimetres (.43–.47 in) SL. ''D. mirifica'' gets slightly larger, at about 14 mm (.55 in) SL, but is still one of the smallest freshwater fishes. ''Danionella'' species lack scales and barbels, but possess a lateral line. ''D. mirifica'' has a single row of melanophores between the pelvic fins and the tips of the cleithra, and there is a lack of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danionella Translucida Bolton Aquarium
''Danionella'' is a genus of danionin fish found in freshwater habitats in Myanmar and West Bengal, India. It includes some of the List of smallest fish in the world, smallest fishes. Distribution Four out of five described species of ''Danionella'' are found in Myanmar. ''D. translucida'' is described from the Irrawaddy River, Ayeyarwady River basin, and ''D. mirifica'' was described from the Kamaing area in upper Myanmar. ''Danionella priapus'' is Endemism, endemic to India. Description When first described, ''Danionella translucida'' was the smallest Ostariophysi, ostariophysan and the smallest adult vertebrate to inhabit fresh water. Its adult size ranges from 10–12 millimetres (.43–.47 in) fish measurement, SL. ''D. mirifica'' gets slightly larger, at about 14 mm (.55 in) SL, but is still one of the smallest freshwater fishes. ''Danionella'' species lack scale (zoology), scales and barbel (anatomy), barbels, but possess a lateral line. ''D. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danionella Cerebrum
''Danionella cerebrum'' is a species of freshwater ray-finned fish belonging to the family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ... Danionidae. This fish was reported in 2021 from turbid low altitude streams on the southern and eastern slopes of the Bago Yoma mountain range in Myanmar as well as from an irrigation canal southwest of the town of Hmawbi in Yangon Division. It was previously erroneously identified as ''Danionella translucida'' due to the close resemblance and similar geographical distribution of the two species. Adult fish of the species measure only 10–13.5 mm in size and have a brain volume of just 0.6 mm3 which is thus far the smallest known adult vertebrate brain. ''Danionella cerebrum'' larvae have been shown to exhibit similarities but als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danionella Cerebrum (cropped)
''Danionella cerebrum'' is a species of freshwater ray-finned fish belonging to the family Danionidae. This fish was reported in 2021 from turbid low altitude streams on the southern and eastern slopes of the Bago Yoma mountain range in Myanmar as well as from an irrigation canal southwest of the town of Hmawbi in Yangon Division. It was previously erroneously identified as '' Danionella translucida'' due to the close resemblance and similar geographical distribution of the two species. Adult fish of the species measure only 10–13.5 mm in size and have a brain volume of just 0.6 mm3 which is thus far the smallest known adult vertebrate brain. ''Danionella cerebrum'' larvae have been shown to exhibit similarities but also differences in their locomotor activity compared to the zebrafish (Danio rerio) to which they are evolutionary closely related. Due to its miniature size, rich behavioural repertoire, and optical translucency that persists into adulthood, ''Danionel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danionella Translucida
''Danionella translucida'' is an extremely small (1.1 cm long) species of freshwater ray-finned fish belonging to the family Danionidae. This fish is endemic to Myanmar. When described, it was considered to be one of the smallest fish. It was collected from the roots of floating aquatic plants in a slow-flowing, shallow stream (maximum depth 1 m) in the Pegu Division of Myanmar. It was found alongside ''Danio'', '' Microrasbora'', ''Erethistes'', and ''Oryzias'' species. Observed in life, ''D. translucida'' is almost perfectly transparent except for its eyes. It has a distinctive pattern of melanophore Chromatophores are cells that produce color, of which many types are pigment-containing cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans and cephalopods. Mammals and birds, in contrast ...s. There are no melanophores on the dorsal surface except on the head over the posterior part of the brain. On the posteri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danionella Priapus (cropped)
''Danionella priapus'' is a species of ''Danionella'' endemic to India. It is sexually dimorphic and, like other species in the genus, possesses a skeleton with fewer bones than the closely related zebrafish. However, it has a number of distinguishing features which differentiate it from others in the genus, with the most notable example being the conically projecting genital papilla between the funnel-shaped pelvic fins of males.Britz, Ralf. “''Danionella Priapus'', a New Species of Miniature Cyprinid Fish from West Bengal, India (Teleostei: Cypriniformes: Cyprinidae).” ''Zootaxa'', vol. 2277, no. 2277, Magnolia Press, 2009, pp. 53–60, https://doi.org/10.11646/zootaxa.2277.1.4. References priapus In Greek mythology, Priapus (; ) is a minor rustic fertility god, protector of livestock, fruit plants, gardens, and male genitalia. Priapus is marked by his oversized, permanent erection, which gave rise to the medical term priapism. He becam ... Cyprinid fish of Asia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danionin
The danionins are a group of small, minnow-type fish belonging to the family Danionidae. Species of this group are in the genera clades ''Danio'' and ''Devario'' (which also includes ''Chela'', ''Laubuka'', ''Microdevario'', and ''Microrasbora'' genera), based on the latest phylo-genetic research by Fang et al in 2009. They are primarily native to the fresh waters of South and Southeast Asia, with fewer species in Africa. Many species are brightly coloured and are available as aquarium fish worldwide. Fishes of the ''danio'' clade tend to have horizontal stripes, rows of spots, or vertical bars, and often have long barbels. Species within the ''devario'' clade tend to have vertical or horizontal bars, and short, rudimentary barbels, if present at all. All danionins are egg scatterers, and breed in the rainy season in the wild. They are carnivores, living on insects and small crustaceans. Fossil record Two fossil danionins, tentatively assigned to ''Rasbora'' ('''Rasbora''' ''ant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danionella Dracula
The dracula fish (''Danionella dracula'') is a species of freshwater ray-finned fish belonging to the family Danionidae. It is a freshwater fish endemic to Myanmar. A close relative is ''Danio rerio'', the zebrafish of aquariums. It is named dracula after its unusual "fangs"; male dracula fish have protruding tooth-like bones stemming from their jawbones. Males have been observed using their fangs to spar with other males. Identified in April 2007 from specimens shipped to the United Kingdom in a consignment of aquarium fishes, the dracula fish has so far only been found in the wild in a small stream at Sha Du Zup between Mogaung and Tanai in northern Myanmar. It is a colourless miniature species and grows to a maximum size of around . The fish has an elongate body with a large head and eyes. Dracula fish lack scales and the upper body is dominated by the jaws on large males. Much of the fish's structure is cartilaginous: it has 44 fewer bones than the zebrafish, and thus it is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Smallest Fish In The World
The world's smallest fish depends on the measurement used. Based on minimum standard length at maturity the main contenders are ''Paedocypris progenetica'' where females can reach it at ,Scholastic news online:''The World's Smallest Fish?'' by: Ezra Billinkoff- Retrieved February 3, 2006 Retrieved January 25 the (''Schindleria brevipinguis'') where females reach it at and males at , and '' |
Danionella Mirifica
''Danionella mirifica'' is a species of freshwater ray-finned fish belonging to the family Danionidae. It is endemic to northern Myanmar and only known from its type locality in Myitkyina District. It is a small species, growing to standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is .... References mirifica Cyprinid fish of Asia Fish of Myanmar Endemic fauna of Myanmar Taxa named by Ralf Britz Fish described in 2003 {{Danioninae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostariophysi
Ostariophysi is the second-largest superorder of fish. Members of this superorder are called ostariophysians. This diverse group contains 10,758 species, about 28% of known fish species in the world and 68% of freshwater species, and are present on all continents except Antarctica. They have a number of common characteristics such as an alarm substance and a Weberian apparatus. Members of this group include fish important to people for food, sport, the aquarium industry, and research. Taxonomy The superorder is divided into two series, Anotophysi and Otophysi. However, in older literature, Ostariophysi was restricted only to the fish that are currently classified under Otophysi. Otophysi was coined in 1970 by Rosen and Greenwood to separate the traditional Ostariophysians from the added Gonorynchiformes. The superorder is classified below: *Series Anotophysi ** Gonorynchiformes, about 107 species *Series Otophysi (Euostariophysi) ** Cypriniformes ( minnows and allies), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Bengal
West Bengal (; Bengali language, Bengali: , , abbr. WB) is a States and union territories of India, state in the East India, eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabitants within an area of as of 2011. The population estimate as of 2023 is 99,723,000. West Bengal is the List of states and union territories of India by population, fourth-most populous and List of states and union territories of India by area, thirteenth-largest state by area in India, as well as the List of first-level administrative divisions by population, eighth-most populous country subdivision of the world. As a part of the Bengal region of the Indian subcontinent, it borders Bangladesh in the east, and Nepal and Bhutan in the north. It also borders the Indian states of Jharkhand, Odisha, Bihar, Sikkim and Assam. The state capital is Kolkata, the List of metropolitan areas in India, third-largest metropolis, and List of cities in I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
