Picture gene & lineage tree
Visual pedigree of breeder-reported inputs, where available. Dashed arrows represent documentary claims or selection history, not DNA-tested genes.
This strain's direct parent lines are not established by the reviewed sources. No breeding cross, genotype or inheritance pattern is implied. Source: Sources remain under review; ancestry connections will appear only with cited evidence.
Browse the larger Medaka lineage atlas ↗
View this strain’s illustrated gene tree in Discord ↗
Lineage review · Batch 20: The reviewed records do not establish a defensible breeding cross; picture ancestry remains disconnected. Original specialist source ↗
Overview
Its name subsequently became foundational stock for multiple independent line-selectors. The original creator should not be replaced by downstream keepers' names. Documented developer/creator role: JOURAKUAN / 静楽庵.
Claim-by-claim evidence
| Research finding | Evidence class | Direct references |
|---|---|---|
| Historical 2014 records attribute original Tricolor Lame Miyuki to JOURAKUAN | Specialist chronology/creator attribution | J02 ↗ |
| The variety is described as red, white and black patterning with multicolor lame | Catalog phenotype definition | J02 ↗ |
| The precise direct-parent cross is not disclosed in the historical table | Unknown original pedigree | J02 ↗ |
| JOURAKUAN's later exterior-light program is a selected branch, not proof that every 2014 specimen had identical exterior light | Distinct historical development scope | J03 ↗ |
Evidence labels refer to documentary strength. They do not assert independently tested genetics.
Known research gaps
- Do not assign Sakade's later house-selection creation to JOURAKUAN as a single exact genetic entity.
- First sale year and complete original mating pair are not established by the cited account.
- DNA-confirmed ancestry, Mendelian segregation, complete parent-pair registers and strain-specific water requirements are not established.
- Images from magazine, breeder sites and shop listings are not republished without verified reuse permission.
Related profiles and lineages
Original research sources
Every row above links directly to its cited reference; publication or creation years are not interchangeable.
- J02: Medaka no Yakata: dated 2012–18 variety catalog — Specialist historical creator-attribution catalog
- J03: JOURAKUAN: LU-04 breeding-history note, June 2022 — First-party breeder-reported lineage and date-specific retail history