How difficult is it to keep Full-Body Tainaikou Medaka?

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

What is the ideal temperature for Full-Body Tainaikou Medaka?

The ideal temperature for Full-Body Tainaikou Medaka is 18〜28℃. Avoid sudden temperature changes and maintain a stable environment.

What is the lifespan of Full-Body Tainaikou Medaka?

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

How large does Full-Body Tainaikou Medaka get?

Full-Body Tainaikou 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 Full-Body Tainaikou Medaka?

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

What is the typical price for Full-Body Tainaikou Medaka?

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

AI-generated image

Full-Body Tainaikou Medaka

Intermediate

Oryzias latipes

An improved medaka whose glow appears over almost the whole interior of the body, or scattered through it. It occurs on transparent-scaled and semi-transparent-scaled fish, and is brighter than ordinary tainaikou, forming a gradation of blue, green and orange.

Difficulty

Intermediate

Temperature

18〜28℃

Lifespan

2-3 years

Size

Up to about 4cm SL

Diet

Prepared medaka food, green water

About

Full-body tainaikou is the trait in which the glow appears over almost the entire interior of the body, or scattered through it. The Medaka Web Encyclopedia lists it as trait 25 and, as a variety, as the blue full-body tainaikou medaka, type No.0124 and fixed variety No.0142. It was created in 2016 and is also known as hyakushiki. The trait appears on transparent-scaled and semi-transparent-scaled fish, whose translucency makes the glow look brighter than ordinary tainaikou. There is no fixed position for the light: some fish glow only here and there, others over the whole body. The colour is not a single hue but a gradation mixing blue, green and orange. As with ordinary tainaikou the glowing layer forms a horizontal plate, so it can only be seen from above. The Japan Medaka Association classification manual groups it with the iridophore traits, separating tainaikou, full-body tainaikou and peritoneal glow by where the light appears.

Source: Wikipedia (CC BY-SA 4.0)

Lifespan of the Full-Body Tainaikou Medaka

The Full-Body Tainaikou Medaka lives 2-3 years.

Size of the Full-Body Tainaikou Medaka

The Full-Body Tainaikou Medaka grows to Up to about 4cm SL.

Temperature & humidity for the Full-Body Tainaikou Medaka

The ideal temperature for the Full-Body Tainaikou Medaka is 18〜28℃.

Basic Info

Origin

Japan (created in 2016; Medaka Web Encyclopedia type No.0124, fixed variety No.0142)

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: Full-body tainaikou

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

Full-body inner glowFull-body inner glow (multi-colour)Transparent scaleSemi-transparent scale (aurora)

Sources: Japan Medaka Association: Variety Classification Manual, 5th ed. (Sep 2025) / Medaka Web Encyclopedia: Medaka Traits / Medaka Web Encyclopedia: Full-body tainaikou

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