Medaka Variety Improvement Course

Understand how body color and shape are inherited in medaka. Learn dominant/recessive patterns and the concept of polygenic inheritance.

Learn the selection process from F1 to F2 generations. How to identify target traits, optimal timing for selection, and handling culled individuals.

Key points for efficient line breeding. Learn when to use line breeding vs outcrossing, and how to manage bloodlines to prevent inbreeding depression.

How to fix popular traits like lame (glitter), hikari body type, and daruma at high rates. Estimating fixation rates and generations needed for stable lines.

Naming conventions and variety registration for new creations. How to maintain breeding records and document traits with photography.