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AQUAPEDIA / SOURCE-LINKED RESEARCH

Kawahara Emerald Fin × Morpho / Mariage Working Cross

（エメラルドフィン×モルフォF4）×マリアージュロングフィンF2

Breeder-described Medaka line or in-development selectionEvidence by claimIndependent review ongoing

Kawahara's source-labeled working cross pairs an Emerald Fin × Morpho F4 male with a Mariage Long Fin F2 female.

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: Kawahara Emerald Fin × Morpho / Mariage Working Cross; Japanese romaji: not verified; Japanese characters: （エメラルドフィン×モルフォF4）×マリアージュロングフィンF2. 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 1Emerald Fin x Morpho F4 family (male)REPORTED INPUT / STAGE 2Mariage Long Fin F2 family (female)FOCAL STRAINAMERICAN / ENGLISH NAMEKawahara Emerald Fin ×Morpho / Mariage WorkingCrossJAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)（エメラルドフィン×モルフォF4）×マリアージュロングフィンF2
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Breeder-specified generation and sexes; no fixed stable cultivar claim Source: Japan Medaka Universe, Kawahara's first-person ongoing experimental crossing

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Lineage review · Batch 017: A breeder-recorded foundation, selection stage or form derivation is shown with dashed lines. The diagram is not DNA proof and may not identify individual parent fish. Specialist source ↗

Overview

Kawahara's source-labeled working cross pairs an Emerald Fin × Morpho F4 male with a Mariage Long Fin F2 female. This account distinguishes original founder varieties, named selected variants, and unfinished breeder projects.

Claim-by-claim evidence

Research findingEvidence classDirect references
Developer role: Toshihiko Kawahara / 河原俊彦 — Developer of original breeder-submitted experimental crossing project.Breeder-submitted role, separate from original source-stock creatorsJMU ↗
The breeder reports a male with altered branching at the caudal fin from an Emerald Fin × Morpho F4 family crossed with a large-tailed Mariage Long Fin F2 female, then further bred.First-person breeding/selection account; publication and sale chronology not independently completeJMU ↗
Selection seeks unusual tail-fin branching and large tail-fin expression; future offspring variation remains an open research goal.Observed or intended visual selection; not a genetic trait testJMU ↗
F4 and F2 are the breeder's stated parental family generations, not a release year, DNA certificate, or stable breed-wide trait ratio.Lineage ambiguity or experimental development constraintJMU ↗

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

Known research gaps

  • Fish-specific parent identifiers, stock provenance, and any complete breeding generation log are not independently verified.
  • DNA causation, segregation ratios, phenotype stability across breeders and first commercial sale year are unverified.
  • Third-party fish photos cannot be reused without creator or rights-holder permission.

Related profiles and lineages

Original research sources

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