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Yuuyake Medaka
BeginnerOryzias latipes
Improved medaka with orange-to-red gradient reminiscent of sunset sky. Beautiful warm-color gradient body color. Popular variety that evokes the scenery of twilight when viewed.
Difficulty
Beginner
Temperature
5〜30℃
Lifespan
2-3 years
Size
3-4cm
Diet
Medaka pellets, daphnia
About
Yuuyake (Sunset) medaka is an improved variety with orange-to-red gradient body color evoking a sunset sky. The scene of a setting sun painting the sky orange, red, and purple from horizon to zenith is directly expressed in the body color, evoking romantic twilight scenes for observers. Body color varies from orange-dominant to red-dominant individuals — displaying multiple individuals together creates an enjoyable sunset gradient effect. Standard body type, 2–4cm. Regular carotenoid-rich color-enhancing food maintains the gradient coloration. Outdoor sunlight deepens colors further. Easy to breed. Peaceful and community-friendly. The warm, gentle beauty of sunset tones is beloved by many enthusiasts.
Lifespan of the Yuuyake Medaka
The Yuuyake Medaka lives 2-3 years.
Size of the Yuuyake Medaka
The Yuuyake Medaka grows to 3-4cm.
Temperature & humidity for the Yuuyake Medaka
The ideal temperature for the Yuuyake Medaka is 20〜28℃.
Hardy in 5–30°C, neutral to slightly alkaline water — easy for beginners.
Basic Info
Origin
Japan (selectively bred variety)
Lifespan
2-3 years
Size
3-4cm
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 gradation body
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 (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.
Regulations & Conservation Status
Not CITES-listed
Oryzias latipes. Not listed in the CITES Appendices (checked on Species+, 2026-09-18).
Sources: Species+ (CITES)
Regulations may change. Always verify the latest information with the relevant authorities.
Yuuyake Medaka Listings
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