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Oryzias latipes var.
Improved medaka characterized by deep red color. Beautiful vivid crimson body color reminiscent of azami (thistle) flowers. Among red medaka, this variety is prized for its especially deep coloration.
Beniazami medaka is an improved variety characterized by vivid deep crimson body color reminiscent of azami (thistle) flowers. True to its name, the deep purple-crimson hue of thistle flowers is beautifully expressed in the body color, the deepest crimson among red medaka varieties. Developed through selective breeding from Youkihi and Koutei lineages toward deep crimson, color becomes even more vivid in sunlight. Regular feeding of carotenoid- and astaxanthin-rich food maintains and enhances body color. Dark containers best showcase the deep crimson. Hardy in 5–30°C, neutral to slightly alkaline water. Selecting deeply colored individuals for breeding maintains and deepens the crimson lineage. Easy to breed. Peaceful and community-friendly.
Origin
Japan (selectively bred variety)
Lifespan
1-3 years
Size
3-4cm
Temperature
5〜30℃
Medaka pellets, daphnia
White container highlights deep crimson body color
Sunlight enhances red coloration
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: 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 · 日本メダカ協会 品種分類マニュアル
Nomenclature follows global taxonomic authority databases.
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5-30°C (optimal 20-28°C)
Carotenoid-containing feed maintains coloration
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Beniazami Medaka is 5〜30℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Beniazami Medaka is 1-3 years. With proper care and nutrition, they can live a long and healthy life.
Beniazami Medaka typically reaches 3-4cm as an adult. Size may vary depending on care conditions and individual genetics.
Beniazami Medaka feeds on: Medaka pellets, daphnia. Aim for a balanced diet with appropriate feeding frequency.
The price of Beniazami Medaka varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: July 8, 2026