Medaka Encyclopedia

Shukogyoku Medaka – 朱紅玉メダカ

Shukogyoku Medaka – 朱紅玉メダカ An elegant evolution of crimson brilliance and luminous depth Physical CharacteristicsThe Shukogyoku Medaka is a refined tricolor improved medaka variety featuring a beautifully balanced blend of red, white, and black, enhanced by a strong layer of external light (体外光 / gai kou). Key traits include: Vivid crimson red body tone, more intense than its predecessor, the Kogyoku Medaka A silky dorsal layer of external light, enhancing its elegance in motion Tricolor base (red/white/black) with a harmonious, natural expression Excellent presence in both top-view and side-view display Its deeper and more vivid red coloration, especially around the head and back, makes it particularly eye-catching in sunlight or LED lighting. Origin and Development Breeder: Medaka no Beans (めだかのビーンズ) Region: Ehime Prefecture, Japan Released: June 2019 Derived From: An enhanced line of Kogyoku Medaka (紅玉メダカ) Breeding Focus: Increasing the red intensity and shine compared to the original line The name “Shukogyoku” (朱紅玉) reflects its red jewel-like quality—literally meaning “vermilion crimson jewel.” Viewing Style & Recommendations Best appreciated in black or dark-colored tubs for contrast Top-view bowls bring out the tricolor layering Responds well to natural sunlight, which intensifies the external glow ConclusionThe Shukogyoku Medaka is a striking example of medaka refinement, embodying the pursuit of deeper color and polished form. A must-have for collectors who seek both elegance and visual clarity, this medaka is not only aesthetically rich but also a symbol of the evolution of improved Japanese medaka lines. Sources / 出典 品種図鑑 – 朱紅玉メダカ | 改良メダカ図鑑 さつまのメダカ屋さん Photos provided by SNR Korea