How difficult is it to keep Youkihi Hikari Medaka?

Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.

What is the ideal temperature for Youkihi Hikari Medaka?

The ideal temperature for Youkihi Hikari Medaka is 5〜30℃. Avoid sudden temperature changes and maintain a stable environment.

What is the lifespan of Youkihi Hikari Medaka?

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

How large does Youkihi Hikari Medaka get?

Youkihi Hikari Medaka typically reaches 3-4cm as an adult. Size may vary depending on care conditions and individual genetics.

What should I feed Youkihi Hikari Medaka?

Youkihi Hikari Medaka feeds on: Medaka pellets, daphnia, brine shrimp. Aim for a balanced diet with appropriate feeding frequency.

What is the typical price for Youkihi Hikari Medaka?

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

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Youkihi Hikari Medaka

Beginner

Oryzias latipes var.

Hikari body type of Youkihi Medaka. Silvery-white glow on the back combined with vivid orange-red coloration. Stunning when viewed from above.

Difficulty

Beginner

Temperature

5〜30℃

Lifespan

2-3 years

Size

3-4cm

Diet

Medaka pellets, daphnia, brine shrimp

About

Youkihi Hikari medaka combines the classic improved variety Youkihi with the hikari body type (symmetrical dorsal and anal fins, broad caudal fin). Vivid orange-red body color combined with silver-white external dorsal light creates spectacular beauty in top-view observation. Hikari body type is highly heritable. Color-enhancing carotenoid food maintains the vermilion color, deepened further by outdoor sunlight. Shallow top-viewing containers best showcase the combination of vermilion body and external light. Popular as a variety that combines Youkihi's beauty with the added brilliance of the hikari trait.

Lifespan of the Youkihi Hikari Medaka

The Youkihi Hikari Medaka lives 2-3 years.

Size of the Youkihi Hikari Medaka

The Youkihi Hikari Medaka grows to 3-4cm.

Temperature & humidity for the Youkihi Hikari Medaka

The ideal temperature for the Youkihi Hikari Medaka is 5〜30℃.

The ideal water temperature for the Youkihi Hikari 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

3-4cm

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.

RecessiveVisual only with two copies; one copy = het (carrier).

Orange-red (hi) bodyHikari body

PolygenicContinuous trait from multiple genes; intensified by selective breeding.

Body luster (taikougai)

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.

Primary sources

Taxonomy & Authority

Accepted name: Oryzias latipes var. (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.