Seiga Medaka – 星河メダカ

A serene stream of starlight, gliding in deep blue brilliance

Physical Characteristics
The Seiga Medaka, also known as Blue Lamé Miyuki (青ラメ幹之), is a breathtaking medaka variety recognized for its cool blue body color enhanced with shimmering lamé. As it swims, the silver-blue sparkle across its back resembles a flowing night sky filled with stars.

• Body Color: Deep and clear blue hue across the body
• Lamé (Glittering Scales): Scattered silver lamé creates a vivid shine, especially under direct sunlight or LED lighting
• Fin Type: Standard fin structure, similar to traditional Miyuki strains
• Scale Type: Normal (non-transparent), providing bold and stable pigmentation

Origin and Development

• Year of Development: 2012
• Breeder (作出者): Toshihiro Wada (和田 敏弘)

Seiga Medaka was developed by crossbreeding White Lamé Miyuki (白ラメ幹之) and Blue Miyuki (青幹之). The goal was to combine the glitter of white lamé with the tranquil blue body of Blue Miyuki. Through careful selection and multi-generational refinement, the Seiga line achieved a stable and beautiful balance of color and shine.

Breeding Notes

• Fixation Rate: High – This strain breeds true with consistency. Most offspring show strong lamé expression and blue coloration, making it ideal for beginners and breeders alike
• Selective Focus: Breeders may enhance lamé density and body uniformity through continued selection
• Environment: The blue and lamé shine is best appreciated in top-view bowls or tanks under soft lighting

Similar Varieties for Comparison

• Blue Miyuki (青幹之): Shares the same base blue color but lacks lamé
• White Lamé Miyuki (白ラメ幹之): Features lamé on a white body base, offering a brighter contrast
• Seiryu Medaka (青龍メダカ): A related blue-bodied strain with metallic shine but differing lamé distribution

Conclusion
The Seiga Medaka is a poetic and visually refined variety that reflects both nature and craftsmanship. Its cool-toned body and glittering lamé evoke calm summer nights under a starry sky. With a high fixation rate and elegant appearance, it’s an excellent choice for medaka enthusiasts seeking beauty and breeding reliability in one lineage.

Sources / 出典:

• 星河（せいが）とは 改良メダカWEB図鑑 No.0128
• Photo courtesy of SNR Korea