Picture gene & lineage tree
Visual pedigree of breeder-reported inputs, where available. Dashed arrows represent documentary claims or selection history, not DNA-tested genes.
Multiple selected trait-family inputs over years, NOT four simultaneous parent fish Source: Oba Nobunaga historic multiyear breeding programme
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Lineage review · Batch 23: Historical source describes the breeding stock or selected form shown by dashed connections. This does not establish individual parentage, genotype, or dominance. Original specialist source ↗
Lineage review · Batch 016: The reviewed sources do not establish a defensible specific parent mating; the illustrated pedigree intentionally remains disconnected. Review Japanese specialist record ↗
Overview
Nobunaga combined Amber body color, transparent-scale expression, Small Eye and Samurai divided-dorsal-fin forms in an elaborate Oba selection program. Distinct archive breeder credit and source-scoped provenance are documented below.
Claim-by-claim evidence
| Research finding | Evidence class | Direct references |
|---|---|---|
| The historic catalog credits Yukio Oba / 大場幸雄 (Hiroshima); Breeder-credited multi-trait selected program. | Breeder attributed in original Japanese specialist catalogue | H78 ↗ |
| The original historic catalogue calls Nobunaga a culmination of a decade of selective crossing among four established trait families; this is a program summary, NOT four simultaneous parents of one mating. | Reported historical breeder description; full parent log not provided | H78 ↗ |
| Amber/transparent-scale colored body, small eyes and a split Samurai-type dorsal-fin presentation. | Observable ornamental traits only, not genetic diagnosis | H78 ↗ |
| The recorded historic 1-million-yen valuation is not a current market price; don't portray this as a proven recent transaction or genetically fixed specification. Date reference: Catalog year 2010. | Recorded naming and chronological limits; no DNA or current stock proof | H78 ↗ |
Evidence labels refer to documentary strength. They do not assert independently tested genetics.
Known research gaps
- Date-group placement is source-reported and not proof of verified first sale or all original breeder generations.
- Incomplete founder stock identities, absence of independently verified molecular genetics and uncertain current-shop stock authenticity.
- Original historical photograph copyrights not cleared; external source photographs are not redistributed.
Related profiles and lineages
Original research sources
Every row above links directly to its cited reference; publication or creation years are not interchangeable.
- H78: Medaka no Yakata — historical creator catalog, 2001–2011 — Historical original-farm descriptions, subgroup labels and breeder credits