How difficult is it to keep Hakuhime Medaka?

Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.

What is the ideal temperature for Hakuhime Medaka?

The ideal temperature for Hakuhime Medaka is 18〜28℃. Avoid sudden temperature changes and maintain a stable environment.

What is the lifespan of Hakuhime Medaka?

The average lifespan of Hakuhime Medaka is 2-3 years. With proper care and nutrition, they can live a long and healthy life.

How large does Hakuhime Medaka get?

Hakuhime Medaka typically reaches Up to about 4cm SL as an adult. Size may vary depending on care conditions and individual genetics.

What should I feed Hakuhime Medaka?

Hakuhime Medaka feeds on: Prepared medaka food, green water. Aim for a balanced diet with appropriate feeding frequency.

What is the typical price for Hakuhime Medaka?

The price of Hakuhime Medaka varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.

AI-generated image

Hakuhime Medaka

Intermediate

Oryzias latipes

An improved medaka with a contrasting two-tone appearance: a white head and a dark body. It combines white body colour with the transparent-scale and black-rim traits, and was fixed in 2019 by Kazuaki Senoo from white fish that appeared out of the beniazami variety.

Difficulty

Intermediate

Temperature

18〜28℃

Lifespan

2-3 years

Size

Up to about 4cm SL

Diet

Prepared medaka food, green water

About

Hakuhime is the nickname for an improved medaka combining white body colour with the transparent-scale and black-rim traits, registered as type No.0218 in the Medaka Web Encyclopedia. It was created in 2019 by Kazuaki Senoo. Its classification name is the white transparent-scale black-rim medaka, although the encyclopedia's summary and description also give it as the white transparent-scale black-rim hikari medaka, including the hikari body type. The contrast between a white head and a dark body is the defining feature, and breeding for a whiter head and a blacker body is said to yield the better fish. The transparent-scale trait, in which iridophores are missing from the gill covers so that the red of the blood shows through, is an important element in making the white and black stand out. Siblings with semi-transparent (aurora) scales also appear, but these never show a clean separation of white and black, so selection must confirm scale type as well as colour. The variety originated when crosses between beniazami, a brilliant vermilion variety, produced a mutant whose vermilion areas turned white; those fish were line-bred and fixed as hakuhime.

Source: Wikipedia (CC BY-SA 4.0)

Lifespan of the Hakuhime Medaka

The Hakuhime Medaka lives 2-3 years.

Size of the Hakuhime Medaka

The Hakuhime Medaka grows to Up to about 4cm SL.

Temperature & humidity for the Hakuhime Medaka

The ideal temperature for the Hakuhime Medaka is 18〜28℃.

Basic Info

Origin

Japan (a domestic variety created in 2019 by Kazuaki Senoo)

Care Specifications

pH: 7–8
Hardness (GH): 9–19 dGH
Water Temp.: 18–28℃

PeacefulGroupBreeding: Moderate

Sources: Medaka Web Encyclopedia: Complete Medaka Care Guide / FishBase Oryzias latipes / Medaka Web Encyclopedia No.0218 (Hakuhime)

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 body colourTransparent scaleBlack rimHikari body type

Sources: Japan Medaka Association: Variety Classification Manual, 5th ed. (Sep 2025) / Medaka Web Encyclopedia: Medaka Traits / Medaka Web Encyclopedia No.0218 (Hakuhime) / Medaka Web Encyclopedia: Transparent scale

A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.