''Oryzias matanensis'', the Matano ricefish, is a species of

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

in the family

Adrianichthyidae The ricefishes are a family (Adrianichthyidae) of small ray-finned fish that are found in fresh and brackish waters from India to Japan and out into the Malay Archipelago, most notably Sulawesi (where the Lake Poso and Lore Lindu species are ...

. It is

endemic Endemism is the state of a species being found 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 found elsew ...

Lake Matano Lake Matano ( id, Danau Matano), also known as Matana, is a natural lake in East Luwu Regency, South Sulawesi province, Indonesia. With a depth of , it is the deepest lake in Indonesia (ranked by maximum depth), the 10th deepest lake in the wo ...

Sulawesi Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Ar ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

Information

This species is known to be found within a freshwater environment within a benthopelagic range. They are native to a tropical climate. ''Oryzias matanensis'' is a non-annual breeder that is known to not migrate. The males of this species are differentiated from other species in its genus by its specific color pattern. The average length of this species as an unsexed male is about 5.5 centimeters or 2.16 inches. If kept in an aquarium, it known to be difficult to maintain this species. The threats and reasoning has not been documented as to why this species is recorded as being near threatened. The only human use that this fish provides is a commercial use for aquariums.

References

Oryzias Freshwater fish of Indonesia Endemic fauna of Indonesia Taxa named by Horst Joachim Aurich Taxonomy articles created by Polbot Fish described in 1935 {{Beloniformes-stub