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Medaka Encyclopedia

Welcome to our Medaka Encyclopedia – your complete guide to Japanese rice fish (Oryzias latipes).

Deep Sea Medaka (Shinkai Medaka)- 深海メダカ

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Shinkai (Deep Sea) Medaka (深海メダカ) Physical Characteristics The Shinkai Medaka, also known as the Deep Sea Medaka, is a uniquely refined strain recognized for its clear, glowing blue body and a rare internal feature known as the blue peritoneum (腹膜青 / fukumaku ao). Unlike other medaka with strong pigmentation, the Shinkai appears delicate and almost ethereal, with minimal black pigment and a translucent, cool-toned look. Breeding and Development The Shinkai Medaka was developed in 2010 by Japanese breeder Ryusei Nagaoka (長岡龍聖). It was selectively bred from Blue Miyuki (青幹之) strains that showed a blue-tinted peritoneum. Through careful refinement, breeders eliminated external shine, reduced black pigmentation, and stabilized the rare blue peritoneum trait. While its name may evoke the deep sea, the fish’s clarity and lightness offer an elegant contrast to more intense varieties. Care and Maintenance To fully appreciate the subtle beauty of the Shinkai Medaka, environmental conditions are key: Conclusion The Shinkai Medaka is a serene and minimalist beauty that stands out for its crystal-clear blue tone and rare blue peritoneum. Created through thoughtful and intentional breeding, this strain remains a favorite among medaka enthusiasts who value subtlety, purity, and elegant design in their aquatic collections. Image and translation courtesy of: https://medakazukan.net/0117_sinkai/ 🌊 A captivating strain with a glowing blue color that feels like you’re gazing into the ocean depths. Best viewed from above in a white container!

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Deep Sea Medaka (Shinkai Medaka)- 深海メダカ

March 28, 2025 No Comments

Shinkai (Deep Sea) Medaka (深海メダカ) Physical Characteristics The Shinkai Medaka, also known as the Deep Sea Medaka, is a uniquely refined strain recognized for its clear, glowing blue body and a rare internal feature known as the blue peritoneum (腹膜青 / fukumaku ao). Unlike other medaka with strong pigmentation, the Shinkai appears delicate and almost ethereal, with minimal black pigment and a translucent, cool-toned look. Breeding and Development The Shinkai Medaka was developed in 2010 by Japanese breeder Ryusei Nagaoka (長岡龍聖). It was selectively bred from Blue Miyuki (青幹之) strains that showed a blue-tinted peritoneum. Through careful refinement, breeders eliminated external shine, reduced black pigmentation, and stabilized the rare blue peritoneum trait. While its name may evoke the deep sea, the fish’s clarity and lightness offer an elegant contrast to more intense varieties. Care and Maintenance To fully appreciate the subtle beauty of the Shinkai Medaka, environmental conditions are key: Conclusion The Shinkai Medaka is a serene and minimalist beauty that stands out for its crystal-clear blue tone and rare blue peritoneum. Created through thoughtful and intentional breeding, this strain remains a favorite among medaka enthusiasts who value subtlety, purity, and elegant design in their aquatic collections. Image and translation courtesy of: https://medakazukan.net/0117_sinkai/ 🌊 A captivating strain with a glowing blue color that feels like you’re gazing into the ocean depths. Best viewed from above in a white container!

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Deep Sea Medaka (Shinkai Medaka)- 深海メダカ

March 28, 2025 No Comments

Shinkai (Deep Sea) Medaka (深海メダカ) Physical Characteristics The Shinkai Medaka, also known as the Deep Sea Medaka, is a uniquely refined strain recognized for its clear, glowing blue body and a rare internal feature known as the blue peritoneum (腹膜青 / fukumaku ao). Unlike other medaka with strong pigmentation, the Shinkai appears delicate and almost ethereal, with minimal black pigment and a translucent, cool-toned look. Breeding and Development The Shinkai Medaka was developed in 2010 by Japanese breeder Ryusei Nagaoka (長岡龍聖). It was selectively bred from Blue Miyuki (青幹之) strains that showed a blue-tinted peritoneum. Through careful refinement, breeders eliminated external shine, reduced black pigmentation, and stabilized the rare blue peritoneum trait. While its name may evoke the deep sea, the fish’s clarity and lightness offer an elegant contrast to more intense varieties. Care and Maintenance To fully appreciate the subtle beauty of the Shinkai Medaka, environmental conditions are key: Conclusion The Shinkai Medaka is a serene and minimalist beauty that stands out for its crystal-clear blue tone and rare blue peritoneum. Created through thoughtful and intentional breeding, this strain remains a favorite among medaka enthusiasts who value subtlety, purity, and elegant design in their aquatic collections. Image and translation courtesy of: https://medakazukan.net/0117_sinkai/ 🌊 A captivating strain with a glowing blue color that feels like you’re gazing into the ocean depths. Best viewed from above in a white container!

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