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Galaxy Medaka
AdvancedA fantastical medaka reminiscent of a night sky galaxy. Beautiful combination of glitter and multiple colors.
Difficulty
Advanced
Temperature
5〜30℃
Lifespan
2-3 years
Size
2-4cm
Diet
Artificial feed, Daphnia
About
Galaxy medaka is a fantastical improved variety with multicolor lame scattered across the body like a cosmic galaxy. Blue, white, gold, pink, and other lame colors scattered over the body evoke nebulae and galaxies of the universe. Fixation rate for multicolor lame is low — mass breeding and rigorous selection are needed to produce individuals with ideal color distribution and density. LED lighting showcases each colored lame at its most brilliant. Dark containers under LED lighting best express the galaxy aesthetic. Selecting parents with the most colors and highest lame density maximizes multicolor expression in offspring.
Lifespan of the Galaxy Medaka
The Galaxy Medaka lives 2-3 years.
Size of the Galaxy Medaka
The Galaxy Medaka grows to 2-4cm.
Temperature & humidity for the Galaxy Medaka
The ideal water temperature for the Galaxy Medaka is 18〜24℃.
Hardy in 5–30°C, neutral to slightly alkaline water.
Basic Info
Origin
Japan (selectively bred variety)
Lifespan
2-3 years
Size
2-4cm
Temperature
5〜30℃
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)
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.
PolygenicContinuous trait from multiple genes; intensified by selective breeding.
Lame
Other
Multi-color pattern
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: (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.
Galaxy Medaka Listings
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