Dark Emerald Fin Medaka (ダークエメラルドフィンメダカ) – Rinko Shine and Amber Elegance

Dark Emerald Fin Medaka (ダークエメラルドフィンメダカ) is a refined ornamental strain known for its elegant amber coloration, emerald-green dorsal shimmer, and semi-transparent scale structure. Developed by breeder Ayumu Medaka (あゆむメダカ) and released in 2022, this variety captures the beauty of subtle color balance and the rare “rinko” (燐光) effect — a net-like shine on the dorsal surface that appears vivid under natural light.

🧬 Genetic Traits & Lineage

• Strain Name (品種名): Dark Emerald Fin
• Breeder (作出者): Ayumu Medaka (あゆむメダカ)
• Released: 2022
• Lineage: Stabilized from amber offspring of the Emerald Fin development line
• Not Related To: Bronze Medaka (ブロンズメダカ); genetically distinct lineage
• Main Trait: Rinko (燐光) — net-like emerald dorsal shine

🎨 Physical Characteristics

• Body Color: Deep amber with a subtle reddish glow
• Scales: Semi-transparent (半透明鱗), enhancing depth and softness
• Dorsal Shine: Emerald-green rinko reflection, best seen in top-view lighting
• Fins: Clear to lightly pigmented, offering a clean silhouette
• Top View Appeal: Best appreciated under sunlight or full-spectrum LED

🌟 Related Strains

• Emerald Fin Medaka: Ancestral line known for green dorsal light
• Bronze Medaka: Often confused, but genetically unrelated to this strain
• Amber Transparent Scales: Other semi-transparent types with warm undertones

🖍️ Conclusion

Dark Emerald Fin Medaka offers an exceptional blend of warmth and radiance. Its amber tone combined with the jewel-like rinko dorsal shine makes it a sophisticated yet naturalistic addition to any medaka collection. For enthusiasts seeking modern refinement and distinct identity in their fish, this strain represents both thoughtful breeding and timeless beauty.

※ This article is based on information from Medaka Zukan and Medaka no Yakata.
※ Photos provided by SNR KOREA. Unauthorized reproduction or redistribution is strictly prohibited.