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AQUAPEDIA / SOURCE-LINKED RESEARCH

Youkihi Daruma — Hatsukoi

朱赤ダルマメダカ / 初恋

Historical Oba named morphology/house selectionEvidence by claimIndependent review ongoing

Youkihi Daruma — Hatsukoi is a documented Daruma short body selected within the Youkihi (Vermilion / Yang Guifei) family.

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: Youkihi Daruma — Hatsukoi; Japanese romaji: not verified; Japanese characters: 朱赤ダルマメダカ / 初恋. 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 1Youkihi vermilion familyREPORTED INPUT / STAGE 2Daruma short-body selectionFOCAL STRAINAMERICAN / ENGLISH NAMEYoukihi Daruma — HatsukoiJAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)朱赤ダルマメダカ / 初恋
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Daruma form selection from Youkihi, not an individual mating pedigree Source: Oba historic Youkihi Hatsukoi Daruma

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 21: Historical source describes the breeding stock or selected form shown by dashed connections. This does not establish individual parentage, genotype, or dominance. Original specialist source ↗

Overview

This is an original breeder-catalogue named morphology selection, not a separate genetic founder. Vermilion-orange Youkihi body color with shorter Daruma morphology.

Claim-by-claim evidence

Research findingEvidence classDirect references
Medaka no Yakata attributes Youkihi Daruma — Hatsukoi to Yukio Oba (大場幸雄), Hiroshima.Original-breeder historical variety recordEARLY ↗
The archive explicitly describes its form as Daruma short body of Youkihi (Vermilion / Yang Guifei).Founder-to-form relation; NOT a documented individual parent matingEARLY ↗ MAP ↗
Vermilion-orange Youkihi body color with shorter Daruma morphology.Archived ornamental appearance description; no standard DNA assayEARLY ↗
Hatsukoi is the documented Daruma body-form branch; later Youkihi Hikari-Daruma is a separate named form. The record appears in the 2005 catalog group.Historical identity/year-scope limitationEARLY ↗

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

Known research gaps

  • Breeder parent fish IDs and the exact crosses introducing the chosen Hikari/Daruma body form are not available in the cited public source.
  • No independent allele, genotype, Mendelian fixation ratio or current breeder-authenticated retail stock claim is established.
  • Source-owned photos are not reused without explicit rights permission.

Related profiles and lineages

Original research sources

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