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AQUAPEDIA / SOURCE-LINKED RESEARCH

Amber Medaka (Kohaku)

琥珀メダカ

Historical Medaka research identityEvidence by claimIndependent review ongoing

Oba's Amber Medaka is a selected deeper-golden line with an amber body and orange-toned tail.

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: Amber Medaka (Kohaku); Japanese romaji: not verified; Japanese characters: 琥珀メダカ. 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 1Aki Ogon / Golden Medaka stock (Oba)REPORTED INPUT / STAGE 2Repeated selection of darker-gold /amber variantsFOCAL STRAINAMERICAN / ENGLISH NAMEAmber Medaka (Kohaku)JAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)琥珀メダカ
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Oba-house original 2004 Amber selection from the Aki Ogon family, not a documented specific mating Source: Medaka no Yakata original Golden and Kohaku breeder variety histories

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 024: Breeder or specialist records establish the pictured historical population, selected form or source stock. Dashed arrows do not imply DNA-confirmed parents or dominance. Original breeder/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

Oba's Amber Medaka is a selected deeper-golden line with an amber body and orange-toned tail. The breeder reports selecting darker golden fish from the Aki Ogon family and continuing selection for a clear amber appearance. Creator-versus-discoverer status is source-scoped.

Claim-by-claim evidence

Research findingEvidence classDirect references
Historical record: Yukio Oba / 大場幸雄 — Original breeder credited.Archive maker or discoverer attributionE78 ↗
The breeder reports selecting darker golden fish from the Aki Ogon family and continuing selection for a clear amber appearance.Source-described historical breeding and development, not independently genotypedE78 ↗
Warm amber to brownish-gold body color with noticeable orange tails is the historic stated appearance.Visual phenotype only; individual expression can varyE78 ↗
This Amber selection precedes the original 2004 Youkihi line; they are distinct source-described founder identities. Historical context: 2004.Editorial distinction grounded in cited source; exact sale dates not guaranteedE78 ↗

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

Known research gaps

  • The exact mating fish and stable genetic mechanisms are not recorded in the public chronology.
  • 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.