Neptune Medaka (ネプチューンメダカ)

A radiant blue medaka inspired by the god of the sea

Overview

The Neptune Medaka (ネプチューンメダカ) is a stunning ornamental strain known for its luminous blue coloration, dense iridescent scales, and elegant fin glow. Named after the Roman god of the sea, this medaka beautifully reflects the deep, mystical colors of the ocean.

Origin and Development

• Breeder (作出者): Medakaya Savannah (メダカ屋サバンナ)
• Region: Saitama, Japan (埼玉県)
• Release Year: July 2023 (2023年7月)

Developed by breeder Medakaya Savannah in Saitama Prefecture, the Neptune Medaka is the result of intentional crossbreeding using several signature strains to achieve a distinctively deep blue body tone and complex reflective traits.

Lineage includes:

• Miyazakura (宮桜): Known for its layered coloration and subtle elegance
• Saboten (サボテン): Contributed greenish lame (ラメ) and shimmering qualities
• Himitsu Heiki (ヒミツヘイキ): Added structural and visual refinement

Key Features

• Brilliant Blue Body:
  The most prominent feature, with particularly vivid intensity near the head
• Dense Lame (ラメ):
  Fine, glittering scales across the body — highly reflective and dynamic under light
• Fin Shine (ヒレ光):
  Glowing fins add movement-based visual beauty
• Aurora Trait (オーロラ系):
  Provides a translucent, radiant layer that enhances overall color depth

Breeding Notes

Breeding Neptune Medaka involves maintaining high standards for coloration, scale density, and glow balance. Its genetic diversity allows for selection of new lines with unique combinations of green, blue, and even subtle purple tones — especially when crossed with other Aurora- or lamé-based strains.

Conclusion

The Neptune Medaka is a product of advanced selective breeding that successfully captures the beauty of shimmering aquatic light. Whether kept as a showpiece or used to develop future generations, it offers exceptional appeal for medaka collectors who appreciate refined elegance and vivid color.

Image and translation courtesy of:  https://www.aqualassic.com/medaka_neptune/