Integrity, traceability, and the preservation of true medaka lineage
The American Medaka Association (AMA) is a nonprofit community dedicated to ethical breeding, education, and the preservation of true medaka lineage.
Proudly representing 142+ approved members across the U.S. and beyond.
*Includes every approved member, even those who chose not to appear in the public directory. Only the total count is shown — never their details.
Our Mission
To build a trustworthy and ethical medaka community in the United States — grounded in education, traceable lineage, and respect for the original creators of each strain.
Learn more about AMA →Education
Practical, science-grounded guidance on medaka care, lineage, and fixation.
Ethical Standards
No egg sales — live fish for better traceability and quality control.
Traceability & Lineage
Verified sources and clear lineage that honor original creators (作出者).
Community
A trustworthy network of medaka keepers, rooted in the U.S. and growing worldwide.
Medaka Breeding Tips and Setup
We're looking for breeding tips, tank setups, photos, videos, and personal experiences that could help other medaka keepers. Share what has worked for you.
Submit by Aug 31, 2026
Members: share a photo, video, article, or breeding experience — approved submissions are featured in the newsletter.
Latest News
All announcements →Jun 27, 2026
Save the Date: First Annual Medaka Exhibition & Show (2026)
Planning is underway for AMA's first Annual Medaka Exhibition & Show in 2026. More details to come — stay tuned and subscribe to our newsletter for updates.
Jun 27, 2026
First Certified Breeder List Published
Our first list of members is now live in the public directory. Reviewed for their commitment to traceability, strain integrity, and responsible practices — connect with keepers and breeders across the country.
Jun 27, 2026
AMA Launches: The Clean Medaka Movement Begins
We're proud to launch the American Medaka Association — a volunteer-led, non-commercial community founded on no egg sales, verified sources, and a community-first philosophy. The Clean Medaka Movement starts now. Membership is free and applications are open!
From the Education Library
Browse all →Why AMA Doesn't Allow Egg Sales
Selling live fish — not eggs — supports traceability, quality control, and the legacy of each strain.
Understanding Lineage and Fixation
Why AMA talks about “lineage” and “fixation” so often — and what they mean for a strain.
Getting Started with Medaka: A Beginner's Guide
Everything a new keeper needs to know about water, tanks, and daily care for healthy medaka.
Welcome our newest members 🎉
A warm welcome to the keepers who recently joined AMA.
medaka.ki
California · joined Sep 3, 2026
Ryan Teoh
Georgia · joined Sep 1, 2026
Mexicali Fishkeeper
Arizona · joined Aug 31, 2026
Steve Osborne
South Carolina · joined Aug 26, 2026
Mangrove Jack
Ontario · joined Aug 21, 2026
Mei
California · joined Aug 10, 2026
Scottie's Shrimp Shed
California · joined Aug 7, 2026
Brendan Tubbs
Michigan · joined Aug 4, 2026