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AQUAPEDIA / SOURCE-LINKED RESEARCH

White Miyuki Albino (Nagaoka)

白幹之アルビノメダカ

Historical Medaka named variety or selected lineEvidence by claimIndependent review ongoing

A white-based albino medaka retaining Miyuki-type external body reflection, created through breeder-reported Albino × Miyuki stock crossing.

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: White Miyuki Albino (Nagaoka); Japanese romaji: not verified; Japanese characters: 白幹之アルビノメダカ. 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 1Albino Medaka stockREPORTED INPUT / STAGE 2Miyuki Medaka stockFOCAL STRAINAMERICAN / ENGLISH NAMEWhite Miyuki Albino(Nagaoka)JAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)白幹之アルビノメダカ
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Reported original breeding-stock cross, no named founder fish, sex direction, segregation count or DNA assay Source: Medaka WEB Zukan No.0114 — Nagaoka Albino Miyuki (2009)

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 21: The reviewed records do not establish a defensible breeding cross; picture ancestry remains disconnected. Original specialist source ↗

Overview

A white-based albino medaka retaining Miyuki-type external body reflection, created through breeder-reported Albino × Miyuki stock crossing. Distinct archive breeder credit and source-scoped provenance are documented below.

Claim-by-claim evidence

Research findingEvidence classDirect references
The historic catalog credits Ryusei Nagaoka / 長岡龍聖 (Hyogo; transliteration provisional); Original developer credited in the historical catalog.Breeder attributed in original Japanese specialist catalogueH78 ↗
The specialist historical archive attributes this 2009 line to Nagaoka and describes albino body expression combined with reflective Miyuki shine.Reported historical breeder description; full parent log not providedH78 ↗
Pale or albino body coloration with Miyuki-type dorsal exterior reflection; avoid inferring eye health from label.Observable ornamental traits only, not genetic diagnosisH78 ↗
The archive's claim that this was an early extension of Miyuki shine to a new body color requires further independent historical corroboration. Date reference: Catalog year 2009.Recorded naming and chronological limits; no DNA or current stock proofH78 ↗

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.