Danionin
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The danionins are a group of small,
minnow Minnow is the common name for a number of species of small freshwater fish, belonging to several genus, genera of the family Cyprinidae and in particular the subfamily Leuciscinae. They are also known in Ireland as wikt:pinkeen, pinkeens. While ...
-type fish belonging to the family
Danionidae 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 ...
. Species of this group are in the genera clades ''
Danio ''Danio'' is a genus of small freshwater fish in the family (biology), family Cyprinidae found in South Asia, South and Southeast Asia, commonly kept in aquarium, aquaria. They are generally characterised by a pattern of horizontal stripes, rows ...
'' and ''
Devario ''Devario'' is a genus of fish in the family (biology), family Danionidae, a family which also contains several other genera of popular freshwater aquarium fish such as ''Rasbora'' and ''Danio''. ''Devario'' are native to the rivers and streams ...
'' (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 water Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salt (chemistry), salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include ...
s of
South South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both west and east. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþa ...
and
Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
, with fewer species in Africa. Many species are brightly coloured and are available as
aquarium An aquarium (: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. fishkeeping, Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquati ...
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''' ''antiqua'' and Rasbora''' ''mohri'') are known from the
Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...
of
Sumatra Sumatra () is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the list of islands by area, sixth-largest island in the world at 482,286.55 km2 (182,812 mi. ...
,
Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...
, representing the earliest record of the group.


Danionin species


Common names

Since 2004, many new danionins have been discovered, which do not yet have scientific names and many other species, previously known only to the scientific fraternity, have become available in aquarist shops. This has predictably led to total confusion as to the naming of some fish, with some species having up to five different common names in use and some common names being used for up to four different species.


Scientific names

Individual danionin species are listed within the relevant pages for each genus, but many danionin species have been changed into different genera over the last decades, in some cases repeatedly; similarly, some species have been synonymised with other species and in some cases later unsynonymised, all of which has caused confusion.


List of genera

* Subfamily
Chedrinae Chedrinae, the troutbarbs, is a subfamily of freshwater ray-finned fishes belonging to the family Danionidae, the danionins or danios. The fishes in this subfamily are found in Asia and Africa. Genera Chedrinae contains the following genera: * ' ...
Bleeker, 1863 (troutbarbs) ** ''
Barilius ''Barilius'' is a genus of freshwater ray-finned fishes belonging to the family Danionidae, the danios or danionins. The fishes in this genus are found in Asia. Four species in this genus have been described since 2012, although three have sinc ...
''
Hamilton Hamilton may refer to: * Alexander Hamilton (1755/1757–1804), first U.S. Secretary of the Treasury and one of the Founding Fathers of the United States * ''Hamilton'' (musical), a 2015 Broadway musical by Lin-Manuel Miranda ** ''Hamilton'' (al ...
, 1822
** '' Bengala''
Gray Grey (more frequent in British English) or gray (more frequent in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning that it has no chroma. It is the color of a cloud-covered s ...
, 1834
** '' Cabdio'' Hamilton, 1822 ** ''
Chelaethiops ''Chelaethiops'' is a genus of freshwater ray-finned fishes belonging to the family Danionidae, the danionins or danios. The fishes in thuis genus are found in lakes and rivers of Africa. While commonly called "sardines", they are not related t ...
'' Boulenger, 1899 ** ''
Engraulicypris ''Engraulicypris'' is a genus of freshwater ray-finned fish belonging to the family Danionidae, the danionins or danios. This genus is classified in the subfamily Chedrinae and the species in the genus are endemic to Africa. In a study of mitoc ...
'' Günther, 1894 ** ''
Leptocypris ''Leptocypris'' is a genus of freshwater ray-finned fishes belonging to the family Danionidae 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'' ...
'' Boulenger, 1900 ** ''
Luciosoma ''Luciosoma'' is a genus of freshwater ray-finned fish belonging to the family Danionidae, the danionins or danios. The fishes in this genus are found in Southeast Asia Species ''Luciosoma'' contains the following species: * '' Luciosoma bleeke ...
'' Bleeker, 1855 ** ''
Malayochela ''Malayochela'' is a monospecific genus of freshwater ray-finned fish belonging to the family Danionidae, the danios or danionins. The only species in the genus is ''Malayochela maassi'', a fish found in Peninsular Malaysia, Sumatra and Kalimant ...
'' Bănărescu, 1968 ** ''
Nematabramis ''Nematabramis'' is a genus of freshwater ray-finned fish belonging to the family Danionidae, the danionins or danios. These fishes occur in Borneo and the Philippines The Philippines, officially the Republic of the Philippines, is an Arc ...
'' Boulenger, 1894 ** ''
Neobola ''Neobola'' is a genus of freshwater ray-finned fishes belonging to the family Danionidae, the danios or danionins. The fishes in this genus are found mostly in East Africa. There are currently five species in this genus. Species ''Neobola'' ...
'' Vinciguerra, 1895 ** ''
Opsaridium ''Opsaridium'' is a genus of freshwater ray-finned fishes belonging to the family Danionidae 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'' a ...
'' Peters, 1854 ** ''
Opsarius ''Opsarius'' is a genus of fish. Its representatives can be found in a variety of countries in Southeast Asia, South East Asia. These countries include Cambodia, Laos, Thailand, Myanmar, India, China, and China. Certain species of ''Opsarius'' ar ...
''
McClelland McClelland is a surname. Notable people with the surname include: * Alyssa McClelland, Australian actress * Anthony McClelland, biological father of Lebron James * Charles A. McClelland (1917–2006), American political systems analyst * Charles ...
, 1838
** ''
Raiamas ''Raiamas'' is a genus of freshwater ray-finned fishes belonging to the family Danionidae, the danios or danionins. The majority of the species are from Africa, but ''R. bola'' and ''R. guttatus '' are from South and Southeast Asia. Species ' ...
'' D. S. Jordan, 1919 ** '' Rastrineobola'' Fowler, 1936 ** ''
Salmostoma The razorbelly minnows are a group of fish in the genus ''Salmostoma'' found in southern Asia. They have been placed in the genus ''Salmophasia'' but this is regarded as a junior synonym of ''Salmostoma''. Species There are currently 13 recogn ...
'' Swainson, 1839 ** '' Securicula'' Günther, 1868 ** '' Thryssocypris'' Roberts & Kottelat, 1984 * Subfamily
Rasborinae Rasborinae, the rasboras, is a subfamily of freshwater ray-finned fishes belonging to the family Danionidae, the danionins or danios. The fishes in this subfamily are found in Asia. Genera Rasborinae contains the following genera: * '' Amblyphar ...
Günther, 1868 (rasborines) ** ''
Amblypharyngodon The carplets are a genus of freshwater ray-finned fishes, ''Amblypharyngodon'', belonging to the family Danionidae. They are up to in total length and inhabit a wide range of slow-moving or stagnant freshwater habitats in South and Mainland Sou ...
'' Bleeker, 1860 (Carplets) ** ''
Boraras ''Boraras'' is a genus of freshwater ray-finned fishes belonging to the subfamily Rasborinae - the Rasbora, which along with sister subfamily Danioninae (Danio, Devario, Microdevario) comprise the family Danionidae, group popular among freshw ...
'' Kottelat & Vidthayanon, 1993 ** '' Brevibora'' T. Y. Liao, S. O. Kullander & F. Fang, 2010 ** '' Horadandia'' Deraniyagala, 1943 ** '' Kottelatia'' T. Y. Liao, S. O. Kullander & F. Fang, 2010 ** '' Pectenocypris'' Kottelat, 1982 ** ''
Rasbora ''Rasbora'' is a genus of fish in the family Danionidae. They are native to freshwater habitats in South and Southeast Asia, as well as southeast China. A single species, ''R. gerlachi'', is only known from an old specimen that reputedly origina ...
'' Bleeker, 1859 ** '' Rasboroides'' Brittan, 1954 ** ''
Rasbosoma ''Rasbosoma'' is a genus of cyprinid fish found in the Mekong Basin of Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are ...
'' Liao, Kullander & Fang, 2010 ** ''
Trigonopoma ''Trigonopoma'' is a genus of ray-finned fish belonging to the family Danionidae. The fishes in this genus are found in Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern reg ...
'' T. Y. Liao, S. O. Kullander & F. Fang, 2010 ** ''
Trigonostigma ''Trigonostigma'' is a genus of small freshwater ray-finned fishes belonging to the family Danionidae. The fishes in this genus are found in Southeast Asia. These social, colorful freshwater fish are often kept in aquarium An aquarium (: a ...
'' Kottelat &
Witte Witte (and de Witte) are Dutch and Low German surnames meaning "(the) white one". Witte can also be a patronymic surname. Notable people with the surname include: * Alfred Witte (1878–1941), German astrologer * Barbara Witte (1922–1992), Ge ...
, 1999
* Subfamily Danioninae Bleeker, 1863 (danionines) ** '' Betadevario'' P. K. Pramod, F. Fang, Rema Devi, T. Y. Liao, T. J. Indra, K. S. Jameela Beevi & S. O. Kullander, 2010 ** '' Chela'' Hamilton, 1822 ** ''
Danio ''Danio'' is a genus of small freshwater fish in the family (biology), family Cyprinidae found in South Asia, South and Southeast Asia, commonly kept in aquarium, aquaria. They are generally characterised by a pattern of horizontal stripes, rows ...
'' Hamilton, 1822 ** ''
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. tr ...
'' Roberts, 1986 ** ''
Devario ''Devario'' is a genus of fish in the family (biology), family Danionidae, a family which also contains several other genera of popular freshwater aquarium fish such as ''Rasbora'' and ''Danio''. ''Devario'' are native to the rivers and streams ...
'' Heckel, 1843 ** '' Inlecypris'' Howes, 1980 ** '' Laubuka'' Bleeker, 1859 ** '' Microdevario'' F. Fang, Norén,T. Y. Liao, Källersjö & S. O. Kullander, 2009 ** '' Microrasbora'' Annandale, 1918 ** '' Neochela''
Silas Silas or Silvanus (; Greek: Σίλας/Σιλουανός; fl. 1st century AD) was a leading member of the Early Christian community, who according to the New Testament accompanied Paul the Apostle on his second missionary journey. Name and ...
, 1958
*Subfamily Esominae Tan & Armbruster, 2018 (flying barbs) ** ''
Esomus ''Esomus'', or flying barbs, is a genus of freshwater Actinopterygii, ray-finned fish belonging to the Family (biology), family Danionidae. It is the only genus in the monotypic taxon, monotypic subfamily Esominae. The fishes in this genus are fo ...
'' Swainson, 1839


In the aquarium

They are generally active swimmers, occupying the top half of a tank and eat just about any type of aquarium food. They will not, however, generally eat plants or algae. Although boisterous and liable to chase each other and other fish, they are good community fish and do not generally attack each other or other fish, although they occasionally nip fins, and like most fish, eat eggs and any fish small enough to fit into their mouths. These fish are easily stressed by flowing water and bright light. They occur in stagnant water with pH values between 3 and 5 caused by peat, which accumulates from a dense canopy. Generally, this also results in them being subtropical with temperatures of often being fine; they are good jumpers, so a tight-fitting lid is recommended.


Taxonomy

The grouping of fish now deemed danionins has been the subject of constant research and speculation throughout the 20th century. Nearly all the fish classed within the genera ''
Danio ''Danio'' is a genus of small freshwater fish in the family (biology), family Cyprinidae found in South Asia, South and Southeast Asia, commonly kept in aquarium, aquaria. They are generally characterised by a pattern of horizontal stripes, rows ...
'' and ''
Devario ''Devario'' is a genus of fish in the family (biology), family Danionidae, a family which also contains several other genera of popular freshwater aquarium fish such as ''Rasbora'' and ''Danio''. ''Devario'' are native to the rivers and streams ...
'' were originally placed in the genus ''Danio'' upon discovery. However, in the first part of the 20th century, George S. Myers split them into three genera, ''Danio'', ''Brachydanio'', and ''Daniops''. The sole species within Myers' ''Daniops'', ''D. myersi'', has long ago been found to be a synonym of ''Devario laoensis'', but his genus ''Brachydanio'' lasted for much longer, as it included most of the fish now classed as ''Danio'', whereas ''Danio'' included most of the fish now classed as ''Devario''. However, ''
Danio dangila Danio dangila, the moustached danio, is a freshwater fish, and is the largest of the true ''Danio'' species at up to long. Its name is from its particularly long barbels. It is sometimes kept in aquariums, where its relatively passive nature all ...
'' and ''
Danio feegradei The yoma danio (''Danio feegradei'') is a species of freshwater ray-finned fish belonging to the family Danionidae. This species of danio is from Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as ...
'', both of which had most of the characteristics of the ''Brachydanio'' (with the exception that they were much larger than ''Brachydanio'' species) were placed within ''Danios''. (Due to this and other misplacing, both ''Danio'' and ''Brachydanio'' were found to be paraphyletic by Fang Fang in 2003.). In 1941, H.M. Smith attempted to unite all the ''Brachydanios'' and ''Danios'' species into one genus on the basis of a fish from Thailand, which was supposed to bridge the gap. He downgraded both ''Danio'' and ''Brachydanio'' into subgenera and erected a new subgenus of ''Allodanio'' with one member, ''Allodanio ponticulus'', but Myers later pointed out that ''A. ponticulus'' was actually a member of the genus ''
Barilius ''Barilius'' is a genus of freshwater ray-finned fishes belonging to the family Danionidae, the danios or danionins. The fishes in this genus are found in Asia. Four species in this genus have been described since 2012, although three have sinc ...
''. The danionin group was thought to include ''Parabarilius'', ''Danio'', ''Brachydanio'', and ''
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. tr ...
''. In this scheme, danionins were distinguished from other cyprinids by the uniquely shared character of the "danionin notch", a large and peculiarly shaped indentation in the
medial Medial may refer to: Mathematics * Medial magma, a mathematical identity in algebra Geometry * Medial axis, in geometry the set of all points having more than one closest point on an object's boundary * Medial graph, another graph that repr ...
margin of the
mandible In jawed vertebrates, the mandible (from the Latin ''mandibula'', 'for chewing'), lower jaw, or jawbone is a bone that makes up the lowerand typically more mobilecomponent of the mouth (the upper jaw being known as the maxilla). The jawbone i ...
s; this feature is not noted in rasborins, esomins, bariliins, or chelins. However, all of these categories at that time were informal. '' Microrasbora'' was not considered to be a part of the danionins, nor even closely related to ''Danionella'', a part of the danionins as understood at that time. In the late 1980s and 1990s, doubts grew about the validity of ''Brachydanio'', with species being referred to their original naming of ''Danio'', and Fang Fang determined that the genus ''Danio'', recognized up to that point, was
paraphyletic Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ...
. Fang Fang restricted ''Danio'' to the species in the "''D. dangila'' species group", which at the time comprised nine species, including ''D. dangila'', ''D. rerio'', ''D. nigrofasciatus'', and ''D. albolineatus''; the remaining ''Danio'' species were moved to ''Devario'', which at this time included ''D. malabaricus'', ''D. kakhienensis'', ''D. devario'', ''D. chrysotaeniatus'', ''D. maetaengensis'', ''D. interruptus'', and ''D. apogon''. The only ''Danio'' species to have been consistently called ''Danio'' were ''D. dangila'' and ''D. feegradei''. As ''D. dangila'' was the first discovered ''Danio'' (or type) the name ''Danio'' had to remain with ''D. dangila'', which is why the vast majority of species were moved to ''Devario''. Also, the sister group to ''Devario'' was deemed to be a
clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...
formed by '' Inlecypris'' and '' Chela'', and more controversially, ''
Esomus ''Esomus'', or flying barbs, is a genus of freshwater Actinopterygii, ray-finned fish belonging to the Family (biology), family Danionidae. It is the only genus in the monotypic taxon, monotypic subfamily Esominae. The fishes in this genus are fo ...
'' was found to be the
sister group In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and ...
of ''Danio''. The relationships of ''
Sundadanio ''Sundadanio'' is a genus of freshwater Actinopterygii, ray-finned fishes and it is one of two genera in the Family (biology), family Sundadanionidae, known as the tiny danios. These fishes are typically found in peat swamps and blackwater stream ...
'', ''Danionella'', and '' Microrasbora'' remained unresolved. The danionin notch was found to not supported to be a danionin
synapomorphy In phylogenetics, an apomorphy (or derived trait) is a novel Phenotypic trait, character or character state that has evolution, evolved from its ancestral form (or Plesiomorphy and symplesiomorphy, plesiomorphy). A synapomorphy is an apomorphy sh ...
. In another paper, '' Celestichthys margaritatus'' was described as a new species of the Danioninae. Apparently, it is most closely related to ''Microrasbora erythromicron''; the other ''Microrasbora'' species differ significantly from ''Celestichthys''. The genus is identified as a danionin due specializations of its lower jaw and its numerous
anal fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported o ...
rays. Though it lacks a danionin notch, ''Celestichthys'' exhibits the "danionin mandibular knob", a bony process on the side of the mandible behind the danionin notch or where the notch should be; it is perhaps diagnostic of danionins. This knob is better developed in males than females. The fish of Rasborinae almost invariably have anal fins with three spines and five rays. ''Celestichthys'' has three anal fin spines and 8–10 anal fin rays. Also, rasborins have the generalized cyprinid principal caudal fin ray count of 10/9, while all Asian cyprinids with fewer than 10/9 principal caudal fin rays are all diminutive species of Danioninae, including ''Celestichthys'', ''M. erythromicron'', ''Danionella'', and ''Paedocypris''. In 2007, an analysis of the phylogenetic relationships of the recently described genus ''
Paedocypris ''Paedocypris'' is a genus of tiny cyprinid fish found in swamps and streams on the Southeast Asian islands of Borneo, Sumatra and Bintan. ''Paedocypris progenetica'' has been claimed to be the one of smallest known species of fish in the worl ...
'' was published, placing it as the sister taxon to ''Sundadanio''. The clade formed by these two genera was found to be sister to a clade including many danionin genera, as well as some rasborin genera such as ''Rasbora'', ''Trigonostigma'', and ''Boraras'', making the danionin group paraphyletic without these rasborin genera based on these results. This paper considered the danionin genera to be within a larger Rasborinae. Also in 2007, another study analyzed the relationships of ''Danio''. These authors considered Rasborinae to have priority over Danioninae, suggesting that they have the same meaning. Also, ''Danio'' was found to be the sister group of a clade including ''Chela'', ''Microrasbora'', ''Devario'', and ''Inlecypris'', rather than in a clade exclusively with either ''Devario'' or ''Esomus'' as in previous studies. This paper supported the close relationship of ''"Microrasbora" erythromicron'' to ''Danio'' species; however, this study did not include ''Celestichthys'', which was noted by Roberts as being likely to include ''Erythromicron'', but with further research needed. In 2009 and 2010, detailed mitochondrial and nuclear DNA analyses of the phylogenetic interrelationships of the danionins were published by Fang et al (Zoologica Scripta, 38, 3, 2009) and Tang et al (Molecular Phylogenetics and Evolution 57, 2010). These two significant studies confirmed or established several taxonomic standings: The Danionin Tribe (of the Cyprinid Sub-family, Danioninae) were reduced to 3 clades - danio (''Danio'' and ''Danioella'' genera), devario (''Devario, Chela, Laubuka, Microdevario genera)'', and a combined esomus/paedocypris/sundadanio genera clade. ''Rasbora'' and related genera were excluded. The aquarium popular Celestial Pearl Danio / Galaxy Rasbora was confirmed as ''Danio margaritatus'', being most closely related to ''D. erythromicron'', and next to ''D.choprae''. Within the ''devario'' clade, ''Microdevario'' was erected for all but one of the former ''Microrasboras''. There is still uncertainty over the exact relationships for the three miniature taxa: Danionella, Paedocypris, and Sundadanio as all three have shown variability in phylogenetic position among different studies, both molecular and morphological. ''
Tanichthys ''Tanichthys'' is a genus of freshwater fish, it is the only genus in the family Tanichthyidae in the order (biology), order Cypriniformes. They are native to rivers and streams in China and Vietnam. Until recently, the type species, ''T. albonub ...
'' is often regarded as a danionin by aquarists and grouped as such in some older aquatic publications, but no scientific basis exists for this, a fact stated on numerous occasions by Brittan and others. It is more closely related to the ''Rasbora'' species. The danionins can be classed as a subfamily Danioninae which is increasingly gaining credibility as a subfamily distinct from the Rasboriniae within the family
Cyprinidae Cyprinidae is a family of freshwater fish commonly called the carp or minnow family, including the carps, the true minnows, and their relatives the barbs and barbels, among others. Cyprinidae is the largest and most diverse fish family, and t ...
. However, in Nelson, 2006, Danioninae was listed as a
synonym A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...
of Rasborinae. However, neither inter- nor intrarelationships among the "rasborins" has as yet been thoroughly analyzed. A number of the species have only been recently discovered, in remote inland areas of
Laos Laos, officially the Lao People's Democratic Republic (LPDR), is the only landlocked country in Southeast Asia. It is bordered by Myanmar and China to the northwest, Vietnam to the east, Cambodia to the southeast, and Thailand to the west and ...
and
Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has ...
, and do not yet have scientific names. They are listed as ''Danio'' or ''Devario'' sp "xxxx" within the relevant genera and disambiguation pages.


References


External links

* {{Taxonbar, from=Q5219663   Fishkeeping Fish of Southeast Asia