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Proteome nameOryzias latipes Hd-rR - Reference proteome
Proteome IDiUP000001038
Taxonomy8090 - Oryzias latipes
Last modifiedSeptember 3, 2017
Genome assembly and annotationi GCA_000313675.1 from Ensembl

The Japanese rice fish or medaka is a model organism in genomic and experimental biology and was the first vertebrate animal to mate in space, during the mid-1990s. As their name suggests Japanese rice fish can be found in flooded rice paddies in Japan, Taiwan, and other areas of southeast Asia.

Japanese rice fish have a short gestation period and reproductive characteristics that make them easy to rear in the laboratory. They also have many attributes that make them a model organism for scientific study, such as the clarity of its eggs, hardiness and lack of aggression. They have clearly defined sex chromosomes, unlike zebrafish, and in comparison with zebrafish it are hardier and less prone to disease. They are also more closely related to the fugu (Takifugu and Tetraodon).

The Medaka genome has been sequenced using whole-genome shotgun sequencing to give 10.6X coverage. It consists of approximately 700 Mb of sequence, on 24 chromosomes, giving almost 20,000 protein-coding genes. The species-specific sequence evidence (medaka cDNA and protein) is very limited, so the majority of gene models are based on genewise alignments of proteins from other species that are genetically distant to medaka.


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Component nameGenome Accession(s)
Chromosome 11077
Chromosome 2515
Chromosome 3920
Chromosome 41109
Chromosome 51044
Chromosome 61037
Chromosome 71043
Chromosome 81131
Chromosome 91177
Chromosome 10774
Chromosome 11909
Chromosome 12886
Chromosome 131009
Chromosome 14971
Chromosome 15838
Chromosome 161066
Chromosome 171180
Chromosome 18664
Chromosome 19762
Chromosome 20659
Chromosome 21877
Chromosome 22943
Chromosome 23559
Chromosome 24857