Oryzias latipes (Temminck & Schlegel, 1846)

Japanese rice fish

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Beloniformes \| Adrianichthyidae \| Oryziinae
Synonyms	Poecilia latipes, Aplocheilus latipes, Oryzias latipes latipes, ... more
Common names	Tooth- carp, Japanese medaka, Medaka, ... more

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Image of Oryzias latipes (Japanese rice fish)

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Main reference

Roberts, T.R. 1998. (Ref. 27658)
Other references | Biblio | Coordinator : Seegers, Lothar | Collaborators

Size / Weight / Age

Max length : 3.2 cm SL male/unsexed; (Ref. 41299)

Environment

Benthopelagic; amphidromous (Ref. 51243); freshwater; brackish; pH range: 7.0 - 8.0; dH range: 9 - 19

Climate / Range

Subtropical; 18°C - 24°C (Ref. 2060); 55°N - 10°N, 105°E - 85°E

Asia: Japan, Korea, China and Viet Nam. Reported from the middle Nam Theun, Mekong, Irrawaddy, Salween, Red River and Nanpangjiang in basins (Ref. 27732).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal soft rays (total): 6 - 7; Anal soft rays: 15 - 21; Vertebrae: 30 - 31. Meristic characters mainly from Nam Theun, Laos sample only (Ref. 27658). Scale count refers to the scales in longitudinal row (Ref. 41299).

Occurs in ponds, marshes, paddy fields and small flows of plains (Ref. 41299). Prefers slow-moving streams. Inhabits mainly waters of lowlands and brackish water, and also known to inhabit tide pools of coasts of certain regions in Japan and Korea. Withstands a wide range of salinity (Ref. 58933). Omnivorous (Ref. 58933). For indoor culture, a diluted sea water is rather better than the freshwater , and the use of a balanced salt solution is recommended, if the tap water proves to be unsuitable (Ref. 58933). Used in experimental research (Ref. 4537). Non-annual breeder. Is easy to maintain in the aquarium (Ref. 27139). A fluorescent ornamental variety (genetically modified fish), a product of fluorescent protein extracted from jellyfish and attaching to DNA in embryonic fish of this is now being sold in the aquarium trade (Ref. 48573).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Fisheries: of no interest; aquarium: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
Biogeographic modelling \| E-book \| Field guide \| Length-frequency wizard \| Life-history tool \| Point map

Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (tm<1; Fec=40)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (10 of 100)	Not marketed/unknown

Entered by Luna, Susan M.

Modified by Torres, Armi G.

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Page last modified by : elaxamana, 15 July 2009

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