Discover popular medaka varieties. Learn about the characteristics, price ranges, and breeding lineages of Yohkihi, Miyuki, Tri-color, and Lame medaka.
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Discover popular medaka varieties. Learn about the characteristics, price ranges, and breeding lineages of Yohkihi, Miyuki, Tri-color, and Lame medaka.
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Medaka are freshwater fish that have long been cherished in Japanese rice paddies and streams. However, with the recent evolution of selective breeding techniques, their appearance has diversified dramatically. Today, hundreds of varieties exist, with new, distinctive breeds constantly being created through combinations of color, pattern, body shape, and fin morphology.
The appeal of medaka keeping lies in its simplicity. They can be raised in small containers, are relatively hardy and easy to care for even for beginners, and offer the joy of breeding. Combined with the pleasure of selecting beautiful varieties, medaka are enjoyed by people of all ages and backgrounds.
This article explores representative varieties by category and offers guidance on selecting the right breed for you. Whether you're a complete beginner or looking to expand your collection, use this guide to help you choose the perfect medaka.
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Yohkihi medaka emerged in 2004 as the historical variety that sparked the medaka craze. As its name suggests, its vivid crimson-red body color is its defining feature, displaying a beauty that clearly sets it apart from wild medaka.
Miyuki's defining feature is the silvery-white metallic sheen that runs along its back—called "body-metallic." This shimmer catches the light like a jewel, dazzling from different angles. Individuals are ranked by the extent of their body-metallic coverage, with "full-body" specimens (where the entire body glows) being especially popular and commanding higher prices.
These color variants emerged during the selective breeding of Miyuki. Blue and white body colors combined with body-metallic create distinctly different aesthetics. They're widely used as breeding stock for further improvements and remain popular among collectors.
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This variety displays red, white, and black on its body, resembling a miniature ornamental koi. Even siblings from the same parents show entirely different patterns, and the greatest appeal is discovering a one-of-a-kind individual.
This simple yet beautiful variety consists of only red and white. It's easier to manage than Tri-Color medaka, making it accessible for beginner to intermediate keepers. Specimens with sharp, well-defined boundaries between red and white areas ("clean patterns") command premium value.
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Each scale bears a rainbow-hued shimmer (lame), making these fish appear like living jewels as they swim in light. Lame coverage and color vary by individual, with "full-lame" specimens (entirely covered in shimmer) being especially prized.
This luxurious hybrid combines a black body color with Miyuki body-metallic and lame effects. The interplay of gleaming light and color against the dark base creates striking presence. It ranks among the most popular improved varieties, with active selective breeding efforts ongoing among professional breeders.
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This variety features extended dorsal, tail, and pectoral fins compared to standard medaka. Their graceful, leisurely swimming makes them exceptionally captivating as ornamental fish. Many hybrid combinations exist—merging Long-Fin with Yohkihi, Miyuki, and Tri-Color—creating diverse options.
This variety has fewer vertebrae, resulting in a shorter body and distinctive round, chubby silhouette. Its endearing shape has won it a devoted following.
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If you're new to medaka keeping, start with varieties rated "Beginner" difficulty. Yohkihi and Miyuki are hardy, easy to care for, yet sufficiently beautiful.
Here are key points to consider when selecting a variety:
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At br-choku, you purchase directly from medaka specialists, bypassing middlemen to ensure fresh, healthy fish.
Medaka varieties continue to evolve. Yohkihi, Tri-Color, Red and White, Lame—explore these breeds like flipping through a guidebook, and enjoy the journey of finding your personal favorites. Let br-choku be your starting point.
