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Mirage Glow Medaka

The Mirage Glow Medaka (Japanese name: ミラージュグロウメダカ) is a refined improved medaka strain created through the selective crossbreeding of the original Mirage Medaka and the Emekin variety. After four generations (F4) of careful breeding, individuals were stabilized that exhibit both the signature guanine-based iridescence of the Mirage line and the elegant dorsal external light (体外光) inherited from Emekin. Selective breeding emphasized blue body coloration without yellow pigmentation and maintained the standard fin structure, avoiding wide-fin traits. Notably, many individuals exhibit the "Earth-Eye" trait—silver-colored eyes that remain highly heritable. The combined traits of iridescence and external light are stably passed on with an estimated fixation rate of 80%. Learn more about the Mirage Glow Medaka on our Medaka Encyclopedia page.

     

    Understanding Live Fish Options

    Here’s a quick guide to help you choose the right option when purchasing live medaka from our shop. Sizes and sexing are carefully selected, but please note that fish may vary slightly by strain, age, and growth rate.

    Juvenile (Unsexed)

    Young fish, typically 1.0–2.5 cm in size. They are too early to sex and often have not fully developed their final traits yet. As such, they are not graded for color, pattern, or fin type at this stage.

    Female

    Confirmed female medaka, usually 2.5–3.5 cm. Selected by experienced staff, but please note that 100% accuracy cannot be guaranteed for younger fish.

    Male

    Confirmed male medaka, also typically 2.5–3.5 cm. Identified by fin shape and behavior, but final confirmation may develop with maturity.

    Breeding Pair (1 Male + 1 Female)

    One male and one female—ideal for those starting a breeding line or looking for a guaranteed pair.

    Trio (2 Females + 1 Male)

    One male and two females. This setup helps maximize egg production and is commonly used by breeders.

    SS Grade Pair

    A premium hand-selected male and female pair with top-level traits. These are our highest-grade specimens, chosen for exceptional color, form, and balance — ideal for serious breeders and collectors.

    ⚠️ Please note: Sexing is done to the best of our ability at the time of shipping. Juveniles cannot be sexed or graded for traits. Some strains—especially short-body types like Daruma—naturally grow smaller than standard-bodied medaka. In some cases, longfin or swallow-tail varieties may be difficult to sex accurately due to their flowing fins and slower development. If you believe there is an error in the sex of the fish you received, please don’t hesitate to reach out via our Contact Us page.

    🐟 If your goal is serious breeding, we highly recommend purchasing multiple breeding pairs or at least two trios. Just like people, medaka have their own personalities and chemistry — and not all combinations will result in successful breeding. Having more than one group increases your chances of forming compatible pairs and achieving strong egg production.
    Option: Trio (2 Females and 1 Male)

    Get more, save more! 🎉

    Buy quantityDiscount
    Buy 2 - 3Get 5% off
    Buy 4 - 5Get 10% off
    Buy 6+Get 15% off
    $110.00
    Tax included. Shipping calculated at checkout.
    • All photos shown are original images taken by SNR MEDAKA USA. Unauthorized use, reproduction, or distribution is strictly prohibited. Photos are for reference only — actual fish may vary.
    • 5 stars: 2 (100%)
    • 4 stars: 0 (0%)
    • 3 stars: 0 (0%)
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    • 1 star: 0 (0%)
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    matt

    The female Medaka they sent me was perfect, large, spawning, healthy and beautiful. I feel like I've gotten culls from so many breeders but these guys sent me their best!!!

    J
    John

    Great quality very happy with my purchase