Medaka Encyclopedia

Dark Emerald Fin Medaka

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.