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AQUAPEDIA / SOURCE-LINKED RESEARCH

Original Matsui Hirenaga (Fin-lengthening)

ヒレ長メダカ / 松井ヒレ長

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

Matsui-developed original full-fin elongation trait, distinct from Swallow and Meller fin forms.

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: Original Matsui Hirenaga (Fin-lengthening); Japanese romaji: not verified; Japanese characters: ヒレ長メダカ / 松井ヒレ長. 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 1Matsui fish-farm population: originallong-fin male discoveredREPORTED INPUT / STAGE 2Matsui/associates reproduced theinherited fin-elongation phenotypeREPORTED INPUT / STAGE 3Original Matsui Hirenaga foundationstock maintained by selectionFOCAL STRAINAMERICAN / ENGLISH NAMEOriginal Matsui Hirenaga(Fin-lengthening)JAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)ヒレ長メダカ / 松井ヒレ長
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Discovery and subsequent reproduction/fixation history, NOT a proven original male/female parent pair or an experimentally mapped gene. Source: Specialist publisher BE-PAL, original Matsui long-fin male discovery and inherited expression

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 031: Discovery and subsequent reproduction/fixation history, NOT a proven original male/female parent pair or an experimentally mapped gene. Original specialist/breeder source ↗

Lineage review · Batch 018: Original parental mating not documented sufficiently for a defensible pedigree; the illustrated ancestry gap stays disconnected. Specialist record ↗

Overview

Matsui-developed original full-fin elongation trait, distinct from Swallow and Meller fin forms. Documentation and incomplete source history follow.

Claim-by-claim evidence

Research findingEvidence classDirect references
Creator / house credit: Katsujiro Matsui / 松井勝二郎, Kumamoto.Source-scoped maker or explicit unknownH89 ↗ MLF ↗
Historical catalogue credits Matsui in 2015; specialist reference based on association classifications separately agrees that fin-lengthening can affect all fins.Breeder-historical origin description; DNA not verifiedH89 ↗ MLF ↗
Broadly elongated fin structures, especially tail, dorsal and anal fins; varying appearance among selected stock.Source-described visual traits, not a molecular genotypeH89 ↗ MLF ↗
Matsui Hirenaga is a fin-form foundation, not the same named entry as Tarumi's specific Kirameki × Matsui Hirenaga derivative. Archive scope: 2015 historical development.Documentary distinction and publication-date limitationH89 ↗ MLF ↗

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.