
AI-generated image
Warm amber (tortoiseshell) body color. More subdued than Youkihi with refined, subtle beauty.
Kohaku (Amber) medaka is an improved variety featuring a warm amber-to-tortoiseshell body color. Unlike the intense vermilion of Youkihi, it displays a translucent amber hue with understated elegance. Many individuals carry transparent-scale traits, allowing a faint view of internal redness. Adapts to any container type with consistent beauty. Hardy in 5–30°C, neutral to slightly alkaline water, suitable for beginners. Moderate color-enhancing food helps maintain the amber depth. Peaceful temperament suits community tanks. Particularly well-matched with traditional Japanese ceramic containers.
Origin
Japan (selectively bred variety)
Lifespan
2-3 years
Size
3-4cm
Temperature
5〜30℃(適温20〜28℃)
Medaka pellets
Beautiful in any container
5-30°C
Close to wild type and hardy
Sources: FishBase: Oryzias latipes / Seriously Fish: Oryzias latipes
改良メダカは体型×体色×柄×光(体内/体外)×鱗(透明鱗)×ラメ×ヒレ等のトレイト合成。掲載は当該品種を構成する確証トレイトのみで遺伝形式は確証のみ付与(不確実は省略)。遺伝形式は交配の参考。
Sources: JMA日本メダカ協会 改良メダカ品種分類マニュアル / 改良メダカWEB図鑑(medakazukan)
A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
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 · 日本メダカ協会 品種分類マニュアル
Nomenclature follows global taxonomic authority databases.
Find listings for this species
Easy to breed with high fixation rate
May seem plain but appreciated by connoisseurs
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Kohaku (Amber) Medaka is 5〜30℃(適温20〜28℃). Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Kohaku (Amber) Medaka is 2-3 years. With proper care and nutrition, they can live a long and healthy life.
Kohaku (Amber) Medaka typically reaches 3-4cm as an adult. Size may vary depending on care conditions and individual genetics.
Kohaku (Amber) Medaka feeds on: Medaka pellets. Aim for a balanced diet with appropriate feeding frequency.
The price of Kohaku (Amber) Medaka varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: July 8, 2026