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AQUAPEDIA / SOURCE-LINKED RESEARCH

Aki Ogon

安芸黄金

Medaka strainEvidence by claimIndependent review ongoing

The Oba breeding history credits the 2001 Aki Ogon golden line as an early selectively bred ornamental Medaka.

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: Aki Ogon; Japanese romaji: Aki Ogon; Japanese characters: 安芸黄金. 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 1Brown Medaka population (selectedpale-gold variants)REPORTED INPUT / STAGE 2Pale-gold selective interbreeding andfixationFOCAL STRAINAMERICAN / ENGLISH NAMEAki OgonJAPANESE NAME (ROMAJI)Aki OgonJAPANESE LETTERS (日本語)安芸黄金
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Describes selection from Brown Medaka, not a documented two-stock parent cross Source: Medaka WEB Zukan No.0015; Yukio Oba original Aki Ogon selection account

Browse the larger Medaka lineage atlas ↗

View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 016: Historic breeder-reported breeding inputs or selection stages are now illustrated with dashed relationships. They do not certify DNA or individual parent fish. Review Japanese specialist record ↗

Overview

Aki Ogon is described in the breeder's historical records as a color-selection milestone, not a named two-parent cross.

Claim-by-claim evidence

Research findingEvidence classDirect references
Yukio Oba is credited for Aki Ogon in the historical breeder catalogFirst-party historical attributionO1 ↗
The catalog and specialist entry associate the original golden lineage with 2001Dated breeder record and specialist corroborationO1 ↗ O5 ↗
The gold phenotype was selected from tea/brown wild-type-like fishBreeder-retrospective selection storyO5 ↗ O2 ↗
Golden/amber descendants should not be assumed identical to the original Aki Ogon stockLineage distinction requiredO1 ↗ O2 ↗

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

Known research gaps

  • Exact founder individuals and allele mechanisms are not documented by the selected sources.
  • Fish-specific genetic testing, validated inheritance percentages, exact water optima and universal grade thresholds have not been established from these cited histories.
  • Breeder-authenticated, licensed photos and individual parent provenance remain a separate editorial requirement.

Related profiles and lineages

Original research sources

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