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Miyuki Medaka
BeginnerCharacterized by a metallic sheen along the back. Graded from weak to full-body (Tetsukamen) based on light coverage.
Difficulty
Beginner
Temperature
5〜30℃（適温20〜28℃）
Lifespan
2-3 years
Size
3-4cm
Diet
Prepared food, daphnia, brine shrimp
About
Miyuki medaka was fixed and named around 2008 by Mikiyuki Sugawara from Aichi Prefecture. Its defining feature is a brilliant external body light (taigaiko) running along the back in silver-blue-white metallic sheen. Light coverage is graded from 'weak' to 'strong,' 'super,' and 'Tetsukamen' (iron mask / full-body), the latter being most prized. Water temperature management around 28°C during the juvenile stage is said to promote light development. Dark containers best showcase the metallic shimmer. Selective breeding of wide-coverage individuals improves offspring quality. Suitable for hobbyists from beginners to advanced.
Basic Info
Origin
Japan (Aichi Prefecture, selectively bred variety)
Lifespan
2-3 years
Size
3-4cm
Temperature
5〜30℃（適温20〜28℃）
Diet
Prepared food, daphnia, brine shrimp
Care Guide
Container
Dark containers enhance the metallic sheen
Selection
Breeding high-coverage pairs improves offspring quality
Breeding
Easy like Youkihi. Fry selection is key for quality
Care Specifications
- pH
- 7–8
- Hardness (GH)
- 9–19 dGH
- Water Temp.
- 18–24℃
PeacefulGroupBreeding: Easy
Sources: FishBase: Oryzias latipes / Seriously Fish: Oryzias latipes
Morphs (Varieties)
改良メダカは体型×体色×柄×光(体内/体外)×鱗(透明鱗)×ラメ×ヒレ等のトレイト合成。掲載は当該品種を構成する確証トレイトのみで遺伝形式は確証のみ付与(不確実は省略)。遺伝形式は交配の参考。
PolygenicContinuous trait from multiple genes; intensified by selective breeding.
Body luster (taikougai)
Sources: JMA日本メダカ協会 改良メダカ品種分類マニュアル / 改良メダカWEB図鑑(medakazukan)
A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.
References & Sources
Edited & verified by: br-choku 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: (Temminck & Schlegel, 1846)
Synonyms: Aplocheilus latipes (Temminck & Schlegel, 1846), Poecilia latipes Temminck & Schlegel, 1846, Oryzias latipes latipes (Temminck & Schlegel, 1846)
Authority databases: FishBase · GBIF · 日本メダカ協会 品種分類マニュアル
Nomenclature follows global taxonomic authority databases.
Miyuki Medaka Listings
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