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AQUAPEDIA / SOURCE-LINKED RESEARCH

Snow White (Savanna line)

スノーホワイト

Medaka breeder-documented selection lineEvidence by claimIndependent review ongoing

Savanna reports a White Diamond × Fromage-derived selection crossed again with White Diamond RLF.

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: Snow White (Savanna line); Japanese romaji: not verified; Japanese characters: スノーホワイト. 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 1White Diamond × Fromage baseREPORTED INPUT / STAGE 2White Diamond Real Long FinFOCAL STRAINAMERICAN / ENGLISH NAMESnow White (Savanna line)JAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)スノーホワイト
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Reported inputs and selection stages; not a verified single-generation cross Source: Savanna Vol.1 (2025), printed p.5

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Overview

The breeder selects for closer White Diamond expression and fine network-like patterns over fins. The catalog is a first-party account, not independent genetic confirmation.

Claim-by-claim evidence

Research findingEvidence classDirect references
The catalog describes (White Diamond × Fromage) × White Diamond RLF lineage. (Savanna Vol.1, printed p.5)One first-party breeder source; independent review ongoingS2 ↗
Savanna describes selection toward White Diamond-like color expression. (Savanna Vol.1, printed p.5)One first-party breeder source; independent review ongoingS2 ↗
Finer and denser fin network patterns are an explicit goal of the selection. (Savanna Vol.1, printed p.5)One first-party breeder source; independent review ongoingS2 ↗
The catalog mentions an individual White Diamond RLF male received from Yoshinori Nakazato; this is a breeder narrative, not an independently verified surviving pedigree for each fish sold. (Savanna Vol.1, printed p.5)One first-party breeder source; independent review ongoingS2 ↗

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

Detailed original breeder-source chart

Breeder-reported lineage and selection

The dashed arrows map reported inputs, not independently authenticated parent pairs. Multi-stage inputs are shown together for readability; this is not a verified single-generation mating plan.

Visual Medaka lineage for Snow White. Dashed connectors show breeder-reported input or selection history; they do not prove actual parent pairs, alleles, or dominance.REPORTED INPUT / STAGE 1White Diamond × Fromage baseREPORTED INPUT / STAGE 2White Diamond Real Long FinFOCAL STRAINSnow White
Dashed connectors show breeder-reported input or selection history; they do not prove actual parent pairs, alleles, or dominance. Parent fish IDs are not independently established.

Source: Savanna Vol.1, printed p.5. Dashed means breeder-reported; the original source alone does not prove inherited traits.

Known research gaps

  • The original date and preserved individual breeder records are unverified.
  • Snow White and Off White share related inputs but are not necessarily the same selected line.
  • No independent DNA-verified inheritance, controlled water-parameter optimum, graded phenotype guarantee or offspring ratio is established.
  • Third-party catalog photos are not licensed for republication in this entry.

Related profiles and lineages

Original research sources

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