Medaka Strain – Josui

Experience the refined beauty of the Josui medaka (Japanese name: 浄水) with this premium breeding pair — 1 male and 1 female. This strain was developed by Wada-san of Medaka no Yakata, a renowned breeder in Japan known for creating elegant medaka and genetic consistency.

Josui medaka are prized for their elegant fins and stable trait expression. Each pair is carefully selected to reflect the best of the strain’s characteristics.

Learn more about the Josui medaka and its origin on our Medaka Encyclopedia page.

• Includes: 1 Male + 1 Female
• Condition: Imported medaka
• Creator: Wada-san (Medaka no Yakata)
• Shipping: UPS 2-Day Air strongly recommended

※ All photos shown are original images taken by SNR Medaka USA. Unauthorized use or reproduction is strictly prohibited. Photos are for reference only — actual fish may vary.

Important Purchase & Shipping Information

For customers who purchase physical Medaka:

• As a general rule, we do not accept cancellations for Medaka sold in-kind after the order has been confirmed.
• Please note that the appearance may differ depending on the lighting and the color of the breeding container.
• This item is not eligible for returns or exchanges.
• We ship to the Continental U.S. only. Sorry, we currently do not ship to Hawaii or Alaska.

Shipping Information

• Please choose UPS 2-Day Air. DOA only applies to 2-Day Air. Please read Shipping Information – SNR Medaka USA.
• Shipping may not be possible due to lack of stock, poor condition, or other issues. In such cases, we will cancel your order, and you will not be charged.
• If you purchase multiple sets of live Medaka, we may combine them into one shipment.