White Buchi Morpho Wide Fin Medaka – 白ブチ・モルフォワイドフィンメダカ

A dazzling harmony of contrast, shimmer, and graceful flow

Physical Characteristics
The White Buchi Morpho Wide Fin Medaka is a selectively bred (Improved) medaka variety known for its elegant black-on-white contrast and shimmering Morpho trait. It features:

• A white body base overlaid with irregular black patches (buchi pattern)
• Lamé (glittering) scales that reflect iridescent blue and silver hues
• Wide dorsal and anal fins that trail gracefully in the water
• A body covered in external light (体外光), giving it a glowing, gemstone-like appearance
• Strong top-view and side-view impact with enhanced movement and color visibility

This variety is a stunning example of modern medaka breeding, where bold patterning meets refined luminescence.

Origin of the Morpho Trait
The term “Morpho” is inspired by the Morpho butterfly, a real insect known for its iridescent blue wings that shimmer with light. In medaka, this trait manifests as:

• A glowing, metallic blue iridescence across the body
• Enhanced brilliance under sunlight or LED lighting
• A layered effect of light and color, especially when combined with other patterns
• Fan-like fins often tipped with white, further emphasizing motion and elegance

The Morpho trait is genetic and must be selectively fixed over generations. It is especially striking when combined with buchi or solid-colored lines.

Breeding Background
This strain is the result of combining the following traits:

• The Buchi (ブチ) pattern, which brings bold black patchwork over a clean white base
• The Morpho lamé expression, offering brilliant reflectivity and depth
• The Wide Fin gene, enhancing silhouette and swimming movement

The fish displays excellent genetic stability, though minor variations in lamé density, fin shape, or pattern layout can be expected in offspring.

Observation Style

• Top-view bowls: Highlight the black/white contrast and flowing fins
• Side-view aquariums: Best for appreciating the Morpho shimmer and lamé reflection
• Lighting: Use natural sunlight or LED lights to bring out the full brilliance of the Morpho trait
• Background color: Black or dark tanks enhance contrast and glitter

Conclusion
The White Buchi Morpho Wide Fin Medaka represents a high point in modern Improved Medaka breeding. It combines bold monochrome beauty with a dynamic shimmer and elegant fin structure, appealing to both seasoned breeders and visual collectors. Whether in a quiet garden bowl or a display aquarium, this medaka brings sophistication and wonder to any setting.

Sources / 出典:

• 改良メダカWEB図鑑 – モルフォ
• めだかの館 – ワイドフィン