| Oryzias marmoratus | |
|---|---|
| Scientific classification   | |
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Actinopterygii | 
| Order: | Beloniformes | 
| Family: | Adrianichthyidae | 
| Genus: | Oryzias | 
| Species: | O. marmoratus | 
| Binomial name | |
| Oryzias marmoratus (Aurich, 1935) | |
| Synonyms [2] | |
| 
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Oryzias marmoratus, also known as the marmorated ricefish or marmorated medaka, is a species of fish in the family Adrianichthyidae, [3] from Lake Towuti, Lake Mahalona, Lake Lontoa and associated streams in Sulawesi, Indonesia. [4]
Oryzias marmoratus is endemic to Indonesia. [5] They are a vulnerable species. [1] This species is found in freshwater within a benthopelagic range. It is native to tropical climates. They are considered to be a species that does not migrate. The maximum length of the species is about 4.1 cm (1.6 in). The males are of a grayish-brown color on the head with darker brown splotches on the body. [2] This species is a non-annual breeder. It can be kept as an aquarium species, but it is known to be very difficult to do so. Humans use them for the commercial aquarium trade. [6]