West Bengal is an Indian state, located in eastern region of the country on the Bay of Bengal. With over 91 million inhabitants, it is India's fourth-most populous state, it has an area of 88,752 km2. A part of the ethno-linguistic Bengal region of the Indian subcontinent, it borders Bangladesh in the east, Nepal and Bhutan in the north, it borders the Indian states of Odisha, Bihar and Assam. The state capital is Kolkata, the seventh-largest city in India, center of the third-largest metropolitan area in the country; as for geography, West Bengal includes the Darjeeling Himalayan hill region, the Ganges delta, the Rarh region, the coastal Sundarbans. The main ethnic group are the Bengalis, with Bengali Hindus forming the demographic majority; the area's early history featured a succession of Indian empires, internal squabbling, a tussle between Hinduism and Buddhism for dominance. Ancient Bengal was the site of several major Janapadas, while the earliest cities date back to the Vedic period; the region was part including the Mauryans and Guptas.
It was a bastion of regional kingdoms. The citadel of Gauda served as the capital of the Gauda Kingdom, the Buddhist Pala Empire and Hindu Sena Empire. From the 13th century onward, the region was ruled by several sultans, powerful Hindu states, Baro-Bhuyan landlords, until the beginning of British rule in the 18th century; the British East India Company cemented their hold on the region following the Battle of Plassey in 1757, Calcutta served for many years as the capital of British India. The early and prolonged exposure to British administration resulted in an expansion of Western education, culminating in developments in science, institutional education, social reforms in the region, including what became known as the Bengali Renaissance. A hotbed of the Indian independence movement through the early 20th century, Bengal was divided during India's independence in 1947 along religious lines into two separate entities: West Bengal, a state of India, East Bengal, a province of Pakistan which became independent Bangladesh.
Between 1977 and 2011 the state was administered by the world's longest elected Communist government. The economy of West Bengal is the sixth-largest state economy in India with ₹13.14 lakh crore in gross domestic product and a per capita GDP of ₹108,000. The state's cultural heritage, besides varied folk traditions, includes authors in literature, such as Nobel laureate Rabindranath Tagore. Kolkata is known as the "cultural capital of India". West Bengal is known for its enthusiasm for the sport of association football, as well as cricket; the origin of the name Bengal is unknown. One theory suggests that the word derives from "Bang", a Dravidian tribe that settled the region around 1000 BCE; the Bengali word Bongo might have been derived from the ancient kingdom of Vanga. Although some early Sanskrit literature mentions the name Vanga, the region's early history is obscure. At the end of British rule over the Indian subcontinent, the Bengal region was partitioned in 1947 along religious lines into east and west.
The eastern part came to be known be as East Pakistan, the eastern wing of newly born Pakistan and the western part came to be known as West Bengal, which continued as an Indian state. In 2011 the Government of West Bengal proposed a change in the official name of the state to PaschimBanga; this is the native name of the state meaning western Bengal in the native Bengali language. In August 2016 the West Bengal Legislative Assembly passed another resolution to change the name of West Bengal to "Bengal" in English, "Bangla" in Bengali. Despite the Trinamool Congress government's efforts to forge a consensus on the name change resolution, the Indian National Congress, the Left Front, the Bharatiya Janata Party opposed the resolution. However, the central government has turned down the proposal stating that the state should have one single name for all languages instead of three and the name should not be the same as that of any other territory. Stone Age tools dating back 20,000 years have been excavated in the state, showing human occupation 8,000 years earlier than scholars had earlier thought.
The region was a part of the Vanga Kingdom, according to the Indian epic Mahabharata. Several Vedic realms were present in the Bengal region, including Vanga, Rarh and the Suhma Kingdom. One of the earliest foreign references to Bengal is a mention by the Ancient Greeks around 100 BCE of a land named Gangaridai, located at the mouths of the Ganges. Bengal had overseas trade relations with Suvarnabhumi. According to the Sri Lankan chronicle Mahavamsa, Prince Vijaya, a Vanga Kingdom prince, conquered Lanka and gave the name Sinhala Kingdom to the country; the kingdom of Magadha was formed in the 7th century BCE, consisting of the regions now comprising Bihar and Bengal. It was one of the four main kingdoms of India at the time of the lives of Mahavira, founder of Jainism, Gautama Buddha, founder of Buddhism, it kingdoms. Under Ashoka, the Maurya Empire of Magadha in the 3rd century BCE extended over nearly all of South Asia, including Afghanistan and parts of Balochistan. From the 3rd to the 6th centuries CE, the kingdom of Magadha served as the seat of the Gupta Empire.
Two kingdoms – Vanga or Samatata, Gauda –
The zebrafish is a freshwater fish belonging to the minnow family of the order Cypriniformes. Native to South Asia, it is a popular aquarium fish sold under the trade name zebra danio; the zebrafish is an important and used vertebrate model organism in scientific research, for example in drug development, in particular pre-clinical development. It is notable for its regenerative abilities, has been modified by researchers to produce many transgenic strains; the zebrafish is a derived member of the family Cyprinidae. It has a sister-group relationship with Danio aesculapii. Zebrafish are closely related to the genus Devario, as demonstrated by a phylogenetic tree of close species; the zebrafish was referred to in scientific literature as Brachydanio rerio for many years until its reassignment to the genus Danio. The zebrafish is native to fresh water habitats in South Asia where it is found in India, Bangladesh and Bhutan; the northern limit is in the South Himalayas, ranging from the Sutlej river basin in the Pakistan–India border region to the state of Arunachal Pradesh in northeast Indian.
Its range is concentrated in the Ganges and Brahmaputra River basins, the species was first described from Kosi River of India. Its range further south is more local, with scattered records from the Western and Eastern Ghats regions, it has been said to occur in Myanmar, but this is based on old records and refers to close relatives only described notably Danio kyathit. Old records from Sri Lanka are questionable and remain unconfirmed. Zebrafish have been introduced to California, Connecticut and New Mexico in the United States by deliberate release by aquarists or by escape from fish farms; the New Mexico population had been extirpated by 2003 and it is unclear if the others survive, as the last published records were decades ago. Elsewhere the species has been introduced to Malaysia. Zebrafish inhabit medium-flowing to stagnant clear water of quite shallow depth in streams, ditches, oxbow lakes and rice paddies. There is some vegetation, either submerged or overhanging from the banks, the bottom is sandy, muddy or silty mixed with pebbles or gravel.
In surveys of zebrafish locations throughout much of its Bangladeshi and Indian distribution, the water had a near-neutral to somewhat basic pH and ranged from 16.5 to 34 °C in temperature. One unusually cold site was only 12.3 °C and another unusually warm site was 38.6 °C, but the zebrafish still appeared healthy. The unusually cold temperature was at one of the highest known zebrafish locations at 1,576 m above sea level, although the species has been recorded to 1,795 m; the zebrafish is named for the five uniform, horizontal, blue stripes on the side of the body, which are reminiscent of a zebra's stripes, which extend to the end of the caudal fin. Its shape is laterally compressed, with its mouth directed upwards; the male is torpedo-shaped, with gold stripes between the blue stripes. Adult females exhibit a small genital papilla in front of the anal fin origin; the zebrafish can reach up to 4–5 cm in length, although they are 1.8–3.7 cm in the wild with some variations depending on location.
Its lifespan in captivity is around two to three years, although in ideal conditions, this may be extended to over five years. In the wild it is an annual species. In 2015, a study was published about zebrafishes' capacity for episodic memory; the individuals showed a capacity to remember context with respect to objects and occasions. Episodic memody is a capacity of explicit memory systems associated with conscious experience; the approximate generation time for Danio rerio is three months. A male must be present for spawning to occur. Females are able to spawn at intervals of two to three days. Upon release, embryonic development begins. Fertilized eggs immediately become transparent, a characteristic that makes D. rerio a convenient research model species. The zebrafish embryo develops with precursors to all major organs appearing within 36 hours of fertilization; the embryo begins as a yolk with a single enormous cell on top, which divides into two and continues dividing until there are thousands of small cells.
The cells migrate down the sides of the yolk and begin forming a head and tail. The tail grows and separates from the body; the yolk shrinks over time because the fish uses it for food as it matures during the first few days. After a few months, the adult fish reaches reproductive maturity. To encourage the fish to spawn, some researchers use a fish tank with a sliding bottom insert, which reduces the depth of the pool to simulate the shore of a river. Zebrafish spawn best in the morning due to their Circadian rhythms. Researchers have been able to collect 10,000 embryos in 10 minutes using this method. Male zebrafish are furthermore known to respond to more pronounced markings on females, i.e. "good stripes", but in a group, males will mate with whichever females they can find. What attracts females is not understood; the presence of plants plastic pl
Wikispecies is a wiki-based online project supported by the Wikimedia Foundation. Its aim is to create a comprehensive free content catalogue of all species. Jimmy Wales stated that editors are not required to fax in their degrees, but that submissions will have to pass muster with a technical audience. Wikispecies is available under the GNU Free Documentation License and CC BY-SA 3.0. Started in September 2004, with biologists across the world invited to contribute, the project had grown a framework encompassing the Linnaean taxonomy with links to Wikipedia articles on individual species by April 2005. Benedikt Mandl co-ordinated the efforts of several people who are interested in getting involved with the project and contacted potential supporters in early summer 2004. Databases were evaluated and the administrators contacted, some of them have agreed on providing their data for Wikispecies. Mandl defined two major tasks: Figure out how the contents of the data base would need to be presented—by asking experts, potential non-professional users and comparing that with existing databases Figure out how to do the software, which hardware is required and how to cover the costs—by asking experts, looking for fellow volunteers and potential sponsorsAdvantages and disadvantages were discussed by the wikimedia-I mailing list.
The board of directors of the Wikimedia Foundation voted by 4 to 0 in favor of the establishment of a Wikispecies. The project is hosted at species.wikimedia.org. It was merged to a sister project of Wikimedia Foundation on September 14, 2004. On October 10, 2006, the project exceeded 75,000 articles. On May 20, 2007, the project exceeded 100,000 articles with a total of 5,495 registered users. On September 8, 2008, the project exceeded 150,000 articles with a total of 9,224 registered users. On October 23, 2011, the project reached 300,000 articles. On June 16, 2014, the project reached 400,000 articles. On January 7, 2017, the project reached 500,000 articles. On October 30, 2018, the project reached 600,000 articles, a total of 1.12 million pages. Wikispecies comprises taxon pages, additionally pages about synonyms, taxon authorities, taxonomical publications, institutions or repositories holding type specimen. Wikispecies asks users to use images from Wikimedia Commons. Wikispecies does not allow the use of content.
All Species Foundation Catalogue of Life Encyclopedia of Life Tree of Life Web Project List of online encyclopedias The Plant List Wikispecies, The free species directory that anyone can edit Species Community Portal The Wikispecies Charter, written by Wales
In zoological nomenclature, a type species is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e. the species that contains the biological type specimen. A similar concept is used for suprageneric groups called a type genus. In botanical nomenclature, these terms have no formal standing under the code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen, the type of a species name; the species name that has that type can be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, some higher-rank names based on genus names, have such types. In bacteriology, a type species is assigned for each genus; every named genus or subgenus in zoology, whether or not recognized as valid, is theoretically associated with a type species. In practice, there is a backlog of untypified names defined in older publications when it was not required to specify a type.
A type species is both a concept and a practical system, used in the classification and nomenclature of animals. The "type species" represents the reference species and thus "definition" for a particular genus name. Whenever a taxon containing multiple species must be divided into more than one genus, the type species automatically assigns the name of the original taxon to one of the resulting new taxa, the one that includes the type species; the term "type species" is regulated in zoological nomenclature by article 42.3 of the International Code of Zoological Nomenclature, which defines a type species as the name-bearing type of the name of a genus or subgenus. In the Glossary, type species is defined as The nominal species, the name-bearing type of a nominal genus or subgenus; the type species permanently attaches a formal name to a genus by providing just one species within that genus to which the genus name is permanently linked. The species name in turn is fixed, to a type specimen. For example, the type species for the land snail genus Monacha is Helix cartusiana, the name under which the species was first described, known as Monacha cartusiana when placed in the genus Monacha.
That genus is placed within the family Hygromiidae. The type genus for that family is the genus Hygromia; the concept of the type species in zoology was introduced by Pierre André Latreille. The International Code of Zoological Nomenclature states that the original name of the type species should always be cited, it gives an example in Article 67.1. Astacus marinus Fabricius, 1775 was designated as the type species of the genus Homarus, thus giving it the name Homarus marinus. However, the type species of Homarus should always be cited using its original name, i.e. Astacus marinus Fabricius, 1775. Although the International Code of Nomenclature for algae and plants does not contain the same explicit statement, examples make it clear that the original name is used, so that the "type species" of a genus name need not have a name within that genus, thus in Article 10, Ex. 3, the type of the genus name Elodes is quoted as the type of the species name Hypericum aegypticum, not as the type of the species name Elodes aegyptica.
Glossary of scientific naming Genetypes – genetic sequence data from type specimens. Holotype Paratype Principle of Typification Type Type genus
The lateral line called lateral line system or lateral line organ, is a system of sense organs found in aquatic vertebrates, used to detect movement and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, as such, these systems remain linked. Most amphibian larvae and some aquatic adult amphibians possess mechanosensitive systems comparable to the lateral line.
Due to many overlapping functions and their great similarity in ultrastructure and development, the lateral line system and the inner ear of fish are grouped together as the octavolateralis system. The lateral line system allows the detection of movement and pressure gradients in the water surrounding an animal, providing spatial awareness and the ability to navigate in the environment; this plays an essential role in orientation, predatory behavior and social schooling. A related aspect to social schooling is the hypothesis that schooling confuses the lateral line of predatory fishes. In summary, a single prey fish creates a rather simple acoustic pattern while pressure gradients of many swimming prey fish will overlap; the lateral line system is necessary to detect vibrations made by prey, to orient towards the source to begin predatory action. Fish are able to detect movement, produced either by prey or a vibrating metal sphere, orient themselves toward the source before proceeding to make a predatory strike at it.
This behavior persists in blinded fish, but is diminished when lateral line function was inhibited by CoCl2 application. Cobalt chloride treatment results in the release of cobalt ions, disrupting ionic transport and preventing signal transduction in the lateral lines; these behaviors are dependent on mechanoreceptors located within the canals of the lateral line. The role mechanoreception plays. A school of Pollachius virens was established in a tank and individual fish were removed and subjected to different procedures before their ability to rejoin the school was observed. Fish that were experimentally blinded were able to reintegrate into the school, while fish with severed lateral lines were unable to reintegrate themselves. Therefore, reliance on functional mechanoreception, not vision, is essential for schooling behavior. A study in 2014 suggests that the lateral line system plays an important role in the behavior of Mexican blind cave fish; the major unit of functionality of the lateral line is the neuromast.
The neuromast is a mechanoreceptive organ. There are two main varieties of neuromasts located in animals, canal neuromasts and superficial or freestanding neuromasts. Superficial neuromasts are located externally on the surface of the body, while canal neuromasts are located along the lateral lines in subdermal, fluid filled canals; each neuromast consists of receptive hair cells whose tips are covered by a flexible and jellylike cupula. Hair cells possess both glutamatergic afferent connections and cholinergic efferent connections; the receptive hair cells are modified epithelial cells and possess bundles of 40-50 microvilli "hairs" which function as the mechanoreceptors. These bundles are organized in rough "staircases" of hairs of increasing length order; this use of mechanosensitive hairs is homologous to the functioning of hair cells in the auditory and vestibular systems, indicating a close link between these systems. Hair cells utilize a system of transduction that uses rate coding in order to transmit the directionality of a stimulus.
Hair cells of the lateral line system produce a tonic rate of firing. As mechanical motion is transmitted through water to the neuromast, the cupula bends and is displaced. Varying in magnitude with the strength of the stimulus, shearing movement and deflection of the hairs is produced, either toward the longest hair or away from it; this results in a shift in the cell's ionic permeability, resulting from changes to open ion channels caused by the deflection of the hairs. Deflection towards the longest hair results in depolarization of the hair cell, increased neurotransmitter release at the excitatory afferent synapse, a higher rate of signal transduction. Deflection towards the shorter hair has the opposite effect, hyperpolarizing the hair cell and producing a decreased rate of neurotransmitter release; these electrical impulses are transmitted along afferent lateral neurons to the brain. While both varieties of neuromasts utilize this method of transduction, the specialized organization of superficial and canal neuromasts allow them different mechanoreceptive capacities.
Located at the surface of an animal's skin, superficial organs are exposed more directly to the external environment. Though these organs possess the standard "staircase" shaped hair bundles, overall the organization of the bundles within the organs is haphazard, in
The Cyprinidae are the family of freshwater fishes, collectively called cyprinids, that includes the carps, the true minnows, their relatives. Called the "carp family", or "minnow family", Cyprinidae is the largest and most diverse fish family and the largest vertebrate animal family in general, with about 3,000 species of which only 1,270 remain extant, divided into about 370 genera.. They range from about 12 mm to the 3-meter Catlocarpio siamensis; this family of fish is one of the few. The family belongs to the ostariophysian order Cypriniformes, of whose genera and species the cyprinids make more than two-thirds; the family name is derived from the Ancient Greek kyprînos. Cyprinids are stomachless fish with toothless jaws. So, food can be chewed by the gill rakers of the specialized last gill bow; these pharyngeal teeth allow the fish to make chewing motions against a chewing plate formed by a bony process of the skull. The pharyngeal teeth are used by scientists to identify species. Strong pharyngeal teeth allow fish such as the common carp and ide to eat hard baits such as snails and bivalves.
Hearing is a well-developed sense in the cyprinids since they have the Weberian organ, three specialized vertebral processes that transfer motion of the gas bladder to the inner ear. The vertebral processes of the Weberian organ permit a cyprinid to detect changes in motion of the gas bladder due to atmospheric conditions or depth changes; the cyprinids are considered physostomes because the pneumatic duct is retained in adult stages and the fish are able to gulp air to fill the gas bladder, or they can dispose excess gas to the gut. Cyprinids are native to North America and Eurasia; the largest known cyprinid is the giant barb, which may grow up to 3 m in length and 300 kg in weight. Other large species that can surpass 2 m are the golden mahseer and mangar; the largest North American species is the Colorado pikeminnow, which can reach up to 1.8 m in length. Conversely, many species are smaller than 5 cm; the smallest known fish is Paedocypris progenetica, reaching 10.3 mm at the longest. All fish in this family most do not guard their eggs.
The bitterlings of subfamily Acheilognathinae are notable for depositing their eggs in bivalve molluscs, where the young develop until able to fend for themselves. Most cyprinids feed on invertebrates and vegetation due to the lack of teeth and stomach. Many species, such as the ide and the common rudd, prey on small fish when individuals become large enough. Small species, such as the moderlieschen, are opportunistic predators that will eat larvae of the common frog in artificial circumstances; some cyprinids, such as the grass carp, are specialized herbivores. For this reason, cyprinids are introduced as a management tool to control various factors in the aquatic environment, such as aquatic vegetation and diseases transmitted by snails. Unlike most fish species, cyprinids increase in abundance in eutrophic lakes. Here, they contribute towards positive feedback as they are efficient at eating the zooplankton that would otherwise graze on the algae, reducing its abundance. Cyprinids are important food fish.
In land-locked countries in particular, cyprinids are the major species of fish eaten because they make the largest part of biomass in most water types except for fast-flowing rivers. In Eastern Europe, they are prepared with traditional methods such as drying and salting; the prevalence of inexpensive frozen fish products made this less important now than it was in earlier times. Nonetheless, in certain places, they remain popular for food, as well as recreational fishing, have been deliberately stocked in ponds and lakes for centuries for this reason. Cyprinids are popular for angling for match fishing and fishing for common carp because of its size and strength. Several cyprinids have been introduced to waters outside their natural ranges to provide food, sport, or biological control for some pest species; the common carp and the grass carp are the most important for example in Florida. In some cases, such as the Asian carp in the Mississippi Basin, they have become invasive species that compete with native fishes or disrupt the environment.
Carp in particular can stir up sediment, reducing the clarity of the water and making it difficult for plants to grow. Numerous cyprinids have become important in the aquarium and fishpond hobbies, most famously the goldfish, bred in China from the Prussian carp. First imported into Europe around 1728, it was much fancied by Chinese nobility as early as 1150 AD and after it arrived there in 1502 in Japan. In the latter country, from the 18th century onwards, the common carp was bred into the ornamental variety known as koi – or more nishikigoi, as koi means "common carp" in Japanese. Other popular aquarium cyprinids include danionins and true barbs. Larger species are bred by the thousands in outdoor ponds in Southeast Asia, trade in these aquarium fishes
Cypriniformes is an order of ray-finned fish, including the carps, minnows and relatives. This order contains 11-12 families, over 400 genera, more than 4,250 species, with new species being described every few months or so, new genera being recognized frequently, they are most diverse in southeastern Asia, are absent from Australia and South America. Their closest living relatives are the Gymnotiformes and the Siluriformes. Like other orders of the Ostariophysi, fishes of cypriniformes possess a Weberian apparatus, they differ from most of their relatives in having only a dorsal fin on their back. Further differences are the Cypriniformes' unique kinethmoid, a small median bone in the snout, the lack of teeth in the mouth. Instead, they have convergent structures called pharyngeal teeth in the throat. While other groups of fish, such as cichlids possess pharyngeal teeth, the cypriniformes' teeth grind against a chewing pad on the base of the skull, instead of an upper pharyngeal jaw; the most notable family placed here is Cyprinidae.
This is one of the largest families of fish, is distributed across Africa and North America. Most species are freshwater inhabitants, but a considerable number are found in brackish water, such as roach and bream. At least one species is found in the Pacific redfin, Tribolodon brandtii. Brackish water and marine cyprinids are invariably anadromous, swimming upstream into rivers to spawn. Sometimes separated as family Psilorhynchidae, they seem to be specially-adapted fishes of Cyprinidae. Balitoridae and Gyrinocheilidae are families of mountain stream fishes feeding on algae and small invertebrates, they are found only in subtropical Asia. While the former are a speciose group, the latter contain only a handful of species; the suckers are found in temperate North eastern Asia. These large fishes are similar to carps in ecology. Members of Cobitidae common across Eurasia and parts of North Africa. A mid-sized group like the suckers, they are rather similar to catfish in appearance and behaviour, feeding off the substrate and equipped with barbels to help them locate food at night or in murky conditions.
Fishes in the families Cobitidae, Balitoridae and Gyrinocheilidae are called loaches, although it seems that the last do not belong to the lineage of "true" loaches but are related to the suckers. These included all the forms now placed in the superorder Ostariophysi except the catfish, which were placed in the order Siluriformes. By this definition, the Cypriniformes were paraphyletic, so the orders Gonorhynchiformes and Gymnotiformes have been separated out to form their own monophyletic orders; the families of Cypriniformes are traditionally divided into two superfamilies. Superfamily Cyprinioidea contains the carps and minnows and the mountain carps as the family Psilorhynchidae. In 2012 Maurice Kottelat reviewed the superfamily Cobitoidei and under his revision it now consists of the following families: hillstream loaches, Botiidae, true loaches, Gastromyzontidae, sucking loaches, stone loaches, Serpenticobitidae and long-finned loaches. Catostomoidea is treated as a junior synonym of Cobitoidei.
But it seems that it could be split off the Catostomidae and Gyrinocheilidae in a distinct superfamily. While the Cyprinioidea seem more "primitive" than the loach-like forms, they were successful enough never to shift from the original ecological niche of the basal Ostariophysi. Yet, from the ecomorphologically conservative main lineage at least two major radiations branched off; these diversified from the lowlands into torrential river habitats, acquiring similar habitus and adaptations in the process. The mountain carps are apomorphic Cyprinidae close to true carps, or maybe to the danionins. While some details about the phylogenetic structures of this massively diverse family are known – e.g. that Cultrinae and Leuciscinae are rather close relatives and stand apart from Cyprininae – there is no good consensus yet on how the main lineages are interrelated. A systematic list, from the most ancient to the most modern lineages, can thus be given as: Superfamily Cyprinoidei Family Cyprinidae Bonaparte, 1840 and minnows incl.
Psilorhynchidae) Superfamily Cobitoidei Superfamily Catostomoidea Family Catostomidae Agassiz 1850 Superfamily Gyrinocheiloidea Family Gyrinocheilidae Gill 1905 Superfamily Cobitoidea Family Barbuccidae Kottelat 2012 Family Serpenticobitidae Kottelat 2012 Family Botiidae Berg 1940 Family Vaillantellidae Nalbant & Bănărescu 1977 Family Cobitidae Swainson 1838 Family Balitoridae Swainson 1839 Family Gastromyzontidae Fowler 1905 Family Ellopostomatidae Bohlen & Šlechtová 2009 Family Nemacheilidae Regan 1911 Phylogeny based on the work of the following works Cypriniformes include the most primitive of the Ostariophysi in the narrow sense. This is evidenced n