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AQUAPEDIA / SOURCE-LINKED RESEARCH

Amber Samurai (Split Dorsal Fin)

琥珀サムライメダカ

Medaka historically documented variety / house-selectionEvidence by claimIndependent review ongoing

An early Oba Amber body-color Samurai fin-form selection with a split dorsal fin.

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 Samurai (Split Dorsal Fin); Japanese romaji: not verified; Japanese characters: 琥珀サムライメダカ. 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 1Oba-house Amber / Kohaku colour family(2004)REPORTED INPUT / STAGE 2Selected split dorsal fin, calledSamurai; often Hikari or Hikari DarumaformFOCAL STRAINAMERICAN / ENGLISH NAMEAmber Samurai (Split DorsalFin)JAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)琥珀サムライメダカ
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Breeder classification of a Samurai-fin form within Amber; does NOT identify original cross, dates of each generation, or mechanism of fin splitting. Source: Medaka no Yakata original 2004 Amber Samurai category/fin-form description

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 030: Breeder classification of a Samurai-fin form within Amber; does NOT identify original cross, dates of each generation, or mechanism of fin splitting. Original breeder 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

An early Oba Amber body-color Samurai fin-form selection with a split dorsal fin. Documentation and incomplete source history follow.

Claim-by-claim evidence

Research findingEvidence classDirect references
Creator / house credit: Yukio Oba / 大場幸雄, Hiroshima.Source-scoped maker or explicit unknownH78 ↗
The original history describes Samurai (selfin) as a divided dorsal fin with sword-like appearance, often observed in Hikari or Hikari Daruma body forms.Breeder-historical origin description; DNA not verifiedH78 ↗
Warm Amber body and a dorsal fin that splits into two visible sections; length and form may vary.Source-described visual traits, not a molecular genotypeH78 ↗
Samurai is a historical dorsal fin shape and distinct from later Meller divided-fin forms; not proof of a newly mapped gene. Archive scope: 2004 historical group.Documentary distinction and publication-date limitationH78 ↗

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

Known research gaps

  • Exact individually authenticated parent stock, all breeding generations and any stable genotype or inheritance ratio are unknown.
  • Historic year-group inclusion does not guarantee a breeder's actual first commercial sale year or present-day retail provenance.
  • Original fish photographs and source-owned images are not republished without explicit licensing.

Related profiles and lineages

Original research sources

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