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Otohime Medaka
IntermediateOryzias latipes var.
Beautiful modified medaka with red-orange body and external light. Named for the elegant glow like Princess Otohime of Ryugu Palace. Best appreciated from above.
Difficulty
Intermediate
Temperature
5〜30℃
Lifespan
2-3 years
Size
3-4cm
Diet
Medaka pellets, daphnia
About
Otohime medaka is an improved variety with orange-red body and external body light, named after Princess Otohime of Ryugu-jo (the sea palace from the Japanese folktale Urashima Taro). Like Youkihi and Koutei, it belongs to the red medaka lineage, but the addition of external body light elevates its magnificence. External light is graded from 'weak' to 'strong,' 'super,' and 'full-body (iron mask),' with full-body coverage being the most prized. Outdoor sunlight combined with astaxanthin- and carotenoid-rich color-enhancing food produces the most beautiful vermilion coloration and external light. Selective breeding of wide-light, vividly colored individuals improves quality.
Lifespan of the Otohime Medaka
The Otohime Medaka lives 2-3 years.
Size of the Otohime Medaka
The Otohime Medaka grows to 3-4cm.
Temperature & humidity for the Otohime Medaka
The ideal temperature for the Otohime Medaka is 20〜28℃.
Hardy in 5–30°C, neutral to slightly alkaline water.
Basic Info
Origin
Japan (selectively bred variety)
Lifespan
2-3 years
Size
3-4cm
Temperature
Care Specifications
- pH
- 7–8
- Hardness (GH)
- 9–19 dGH
- Water Temp.
- 20–28℃
PeacefulGroupBreeding: Easy
Sources: FishBase: Oryzias latipes / Seriously Fish: Oryzias latipes
Morphs (Varieties)
Selectively bred killifish are trait combinations of body form × body color × pattern × luminescence (internal/external) × scale types (transparent scales) × sparkle × fin morphology and so forth. Published entries include only confirmed traits constituting the given variety, with genetic inheritance patterns provided only for confirmed traits (uncertain cases omitted). Genetic patterns are provided as reference for breeding.
RecessiveVisual only with two copies; one copy = het (carrier).
Orange-red body
PolygenicContinuous trait from multiple genes; intensified by selective breeding.
Body luster (taikougai)
Sources: JMA Japan Medaka Association — Improved Medaka Variety Classification Manual (JA) / Improved Medaka Web Encyclopedia (medakazukan, JA)
A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.
References & Sources
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Taxonomy & Authority
Accepted name: Oryzias latipes var. (Temminck & Schlegel, 1846)
Synonyms: Aplocheilus latipes (Temminck & Schlegel, 1846), Poecilia latipes Temminck & Schlegel, 1846, Oryzias latipes latipes (Temminck & Schlegel, 1846)
Authority databases: FishBase · GBIF · Japan Medaka Association — Variety Classification Manual (JA)
Nomenclature follows global taxonomic authority databases.
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