How difficult is it to keep Tenga Medaka?

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

What is the ideal temperature for Tenga Medaka?

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

What is the lifespan of Tenga Medaka?

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

How large does Tenga Medaka get?

Tenga 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 Tenga Medaka?

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

What is the typical price for Tenga Medaka?

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

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Tenga Medaka

Intermediate

Oryzias latipes

An improved medaka of the marco form, lacking a dorsal fin, carrying blue glitter and external luminescence. Created in 2013 by Yoshinori Nakazato by crossing Ryusei with Seika, and named after the Milky Way.

Difficulty

Intermediate

Temperature

18〜28℃

Lifespan

2-3 years

Size

Up to about 4cm SL

Diet

Prepared medaka food, green water

About

Tenga was created in 2013 by Yoshinori Nakazato; its classification name is the blue glitter marco medaka. The Medaka Web Encyclopedia registers it as type No.0432, variety No.0413 and fixed variety No.0095, and it also circulates as dorsal-less blue lame miyuki. It was produced by crossing Ryusei with Seika, a blue lame miyuki, and because the glitter and external luminescence together suggest the Milky Way it was given the old word tenga, used in the Tanabata poems of the Manyoshu. Marco, the trait of having no dorsal fin, was created in 2011 by Takeshi Kogure. External luminescence benefited most from it: the light along the back, which had always broken at the dorsal fin, could now run as a single unbroken line, and that result was Ryusei. Tenga is the variety that added glitter to it.

Source: Wikipedia (CC BY-SA 4.0)

Lifespan of the Tenga Medaka

The Tenga Medaka lives 2-3 years.

Size of the Tenga Medaka

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

Temperature & humidity for the Tenga Medaka

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

Basic Info

Origin

Japan (domestic variety created in 2013 by Yoshinori Nakazato)

Lifespan

2-3 years

Size

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.0432

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

Blue body colourLame (glitter scales)Marco (no dorsal fin)External luminescence (taigaikou)

Sources: Japan Medaka Association: Variety Classification Manual, 5th ed. (Sep 2025) / Medaka Web Encyclopedia: Medaka Traits / Medaka Web Encyclopedia No.0432

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