Chocolate Diamond Medaka (チョコレートダイヤメダカ)

Physical Characteristics

The Chocolate Diamond Medaka is a warm-toned, metallic variety known for its rich brown body coloration with a subtle reddish hue — reminiscent of smooth chocolate. The name “Diamond” reflects the presence of lamé (metallic) scales, which give the fish a soft shimmer under light.

This strain offers a more understated beauty compared to brighter or flashier medaka, making it popular among breeders who appreciate earthy elegance and natural tones.

Breeding and Maintenance

The Chocolate Diamond was developed by refining brown-based medaka lines and enhancing their lamé expression while maintaining color stability. It’s generally considered a stable strain with consistent coloration and shine passed on to offspring.

To keep their colors vibrant:

• Place them in white or lighter-colored tubs, which help bring out the lamé reflection.
• Provide ample sunlight or high-quality lighting to highlight the warm brown tones.
• Maintain clean water and provide a nutritious diet to preserve their health and shine.

Conclusion

The Chocolate Diamond Medaka is a refined and subtle beauty in the world of Japanese rice fish. With its chocolate-like tones and soft diamond sparkle, this variety is ideal for those who value natural elegance and a warm color palette in their medaka collection.