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AQUAPEDIA / SOURCE-LINKED RESEARCH

Miyuki (Original Exterior Light)

幹之メダカ / 幹之

Historical Medaka research identityEvidence by claimIndependent review ongoing

The historical Miyuki founder discovery introduced prominent blue-white exterior light across the dorsal body.

Picture gene & lineage tree

Visual pedigree of breeder-reported inputs, where available. Dashed arrows represent documentary claims or selection history, not DNA-tested genes.

Horizontal branching Medaka lineage. American name: Miyuki (Original Exterior Light); Japanese romaji: Miyuki; Japanese characters: 幹之メダカ / 幹之. Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Documented source links and evidence qualifiers follow the diagram.AQUAPEDIA / MEDAKA LINEAGE ATLASSTRAIN PEDIGREEREPORTED LINEAGEDASHED BRANCHES • REPORTED INPUTS / SELECTION STAGESNot an individual-fish pedigree or DNA / dominance test.REPORTED INPUT / STAGE 1Kan's observed blue-whiteexterior-light fish, 2007REPORTED INPUT / STAGE 2Later propagation and phenotypeselection; subsequent diverse crossesFOCAL STRAINAMERICAN / ENGLISH NAMEMiyuki (Original ExteriorLight)JAPANESE NAME (ROMAJI)MiyukiJAPANESE LETTERS (日本語)幹之メダカ / 幹之
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Origin discovery and propagation stages, not a documented two-parent founding cross Source: Medaka WEB Zukan / Medaka no Yakata history of first Miyuki at 2007 Medaka competition

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View this strain’s illustrated gene tree in Discord ↗

Lineage recheck · Batch 026: Original breeder/archival account describes this stock origin or multigeneration selection. Dashed connectors document history, not DNA or individual fish parents. Source evidence ↗

Lineage review · Batch 018: Original parental mating not documented sufficiently for a defensible pedigree; the illustrated ancestry gap stays disconnected. Specialist record ↗

Overview

The historical Miyuki founder discovery introduced prominent blue-white exterior light across the dorsal body. Medaka no Yakata credits the original observation to 菅高志 in 2007, and specialist exterior-light material independently repeats the date. Creator-versus-discoverer status is source-scoped.

Claim-by-claim evidence

Research findingEvidence classDirect references
Historical record: Takashi Kan / 菅高志 (romanization to reconfirm) — Original discoverer credited, not necessarily developer of all later derivatives.Archive maker or discoverer attributionE78 ↗
Medaka no Yakata credits the original observation to 菅高志 in 2007, and specialist exterior-light material independently repeats the date.Source-described historical breeding and development, not independently genotypedE78 ↗ MEX ↗
A blue-white reflective band over the back, often enhanced by selection to extend closer to the head or mouth.Visual phenotype only; individual expression can varyE78 ↗ MEX ↗
The 2007 discovery and subsequent formal listing or standardization dates are different documentary events; no single source confirms all downstream lineage crosses. Historical context: 2007 observed; later catalog categories can use other years.Editorial distinction grounded in cited source; exact sale dates not guaranteedE78 ↗ MEX ↗

Evidence labels refer to documentary strength. They do not assert independently tested genetics.

Known research gaps

  • Original discovery does not prove the molecular source or dominance of all current exterior-light expressions.
  • Cited first-generation and selected-parent statements do not prove DNA genotype, inheritance rate or present-day breeder-stock identity.
  • No third-party breeder/catalogue image is reproduced; photo rights and original genetic records require independent review.

Related profiles and lineages

Original research sources

Every row above links directly to its cited reference; publication or creation years are not interchangeable.