''Danio erythromicron'', often known as emerald dwarf danio and emerald dwarf rasbora, is a

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), ...

of freshwater

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

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 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 ...

. This fish is

endemic Endemism is the state of a species being found only 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 foun ...

to Inle Lake in

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 ...

Taxonomy and systematics

In 1999, it was suggested that the species be transferred to the genus ''

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 ...

'' based on morphological data, but it was cautioned that more research would be necessary. A

phylogenetic In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical dat ...

analysis of ''Danio'' found it indeed close to that genus, but its precise placement was still indeterminable. Shortly thereafter, a new species, '' Danio margaritatus'', was described under the name ''Celestichthys margaritatus''. However, this new species was quickly moved into ''Danio'' following further analysis. Subsequent analysis of

DNA sequence A nucleic acid sequence is a succession of bases within the nucleotides forming alleles within a DNA (using GACT) or RNA (GACU) molecule. This succession is denoted by a series of a set of five different letters that indicate the order of the nu ...

data showed that ''Microrasbora erythromicron'' was related to ''Danio'', and recommended moving this species to that genus. Later molecular analysis confirmed its placement within the genus, with its closest relatives being '' Danio margaritatus'' and '' Danio choprai''.

References

External links

Microrasbora erythromicron
* {{Taxonbar, from=Q259104 erythrmicron Fish of Myanmar Endemic fauna of Myanmar Fish described in 1918 Taxa named by Nelson Annandale