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Reiwa Tricolor Lame Miyuki Medaka
AdvancedOryzias latipes
An improved medaka that adds the reiwa gene to tricolour lame miyuki. Reiwa is the nickname for semi-transparent scales with coloured fins, a combination that keeps red in the fins and makes up for the tricolour lame miyuki's difficulty in colouring them.
Difficulty
Advanced
Temperature
18〜28℃
Lifespan
2-3 years
Size
Up to about 4cm SL
Diet
Prepared medaka food, green water
About
Reiwa tricolour lame miyuki is an improved medaka that adds the reiwa gene to tricolour lame miyuki; its classification name is the white-vermilion semi-transparent-scale lame mottled medaka, with coloured fins as the common note. The Medaka Web Encyclopedia registers it as type No.0257 and variety No.0242, created in 2020 by Seirakuan. Reiwa is the nickname for semi-transparent scales with coloured fins, and the reiwa gene is said to keep red in the fins and to bring in lame external luminescence as well. Tricolour lame miyuki was known for colouring its fins poorly, and the reiwa gene compensates for this, giving a tricolour lame miyuki that is beautiful right out to the fins. The body carries white and vermilion together with the semi-transparent-scale, lame and mottled traits. Semi-transparent scale, also called aurora, does not separate white and black as cleanly as transparent scale but produces a distinctive translucency. Lame is the trait in which iridophores glitter as grains over the scales, and mottling is a pattern trait whose black patches vary in position between fish. Seirakuan publishes on its own site a family tree tracing the lame miyuki series from the appearance of aurora miyuki.
Source: Wikipedia (CC BY-SA 4.0)
Lifespan of the Reiwa Tricolor Lame Miyuki Medaka
The Reiwa Tricolor Lame Miyuki Medaka lives 2-3 years.
Size of the Reiwa Tricolor Lame Miyuki Medaka
The Reiwa Tricolor Lame Miyuki Medaka grows to Up to about 4cm SL.
Temperature & humidity for the Reiwa Tricolor Lame Miyuki Medaka
The ideal temperature for the Reiwa Tricolor Lame Miyuki Medaka is 18〜28℃.
Basic Info
Care Specifications
- pH
- 7–8
- Hardness (GH)
- 9–19 dGH
- Water Temp.
- 18–28℃
PeacefulGroupBreeding: Hard
Sources: Medaka Web Encyclopedia: Complete Medaka Care Guide / FishBase Oryzias latipes / Medaka Web Encyclopedia No.0257 (Reiwa tricolour lame miyuki)
Morphs (Varieties)
The Japan Medaka Association's classification manual sorts varieties by traits that can be seen rather than by genotype, and does not set out how individual traits are inherited. Traits the manual explicitly says can be passed on and produced by selective, multi-generation breeding are listed as line-bred; the rest are grouped under Other.
Other
White and vermilion tricolourSemi-transparent scale (aurora)LameMottled patternColoured fins (reiwa)
Sources: Japan Medaka Association: Variety Classification Manual, 5th ed. (Sep 2025) / Medaka Web Encyclopedia: Medaka Traits / Medaka Web Encyclopedia No.0257 (Reiwa tricolour lame miyuki) / Seirakuan: About the Reiwa gene
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.
Primary sources
- Wikipedia
- CITES Appendices (species not listed)
- FishBase (IUCN Red List: Least Concern, assessed 2018)
- Medaka Web Encyclopedia: Complete Medaka Care Guide
- Medaka Web Encyclopedia No.0257 (Reiwa tricolour lame miyuki)
- Japan Medaka Association: Variety Classification Manual, 5th ed. (Sep 2025)
- Medaka Web Encyclopedia: Medaka Traits
- Seirakuan: About the Reiwa gene
- FishBase
- GBIF
Taxonomy & Authority
Accepted name: Oryzias latipes (Temminck & Schlegel, 1846)
Breeder: 静楽庵 (2020)
Authority databases: FishBase · GBIF · Medaka Web Encyclopedia No.0257 (Reiwa tricolour lame miyuki) · Seirakuan: About the Reiwa gene
Nomenclature follows global taxonomic authority databases.
Regulations & Conservation Status
Not CITES-listedIUCN LC · Least Concern
Sources: CITES Appendices (species not listed) / FishBase (IUCN Red List: Least Concern, assessed 2018)
Regulations may change. Always verify the latest information with the relevant authorities.
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