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AQUAPEDIA / SOURCE-LINKED RESEARCH

Kotohime — Amber Black Rim

琴姫

Breeder-attributed historical Medaka varietyEvidence by claimIndependent review ongoing

A Wada-attributed amber transparent-scale black-rim variety called Kotohime.

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: Kotohime — Amber Black Rim; Japanese romaji: Kotohime; Japanese characters: 琴姫. 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 1Beniazami (vermilion transparent-scaleblack-rim Hikari)REPORTED INPUT / STAGE 2Vermilion-toned ambertransparent-scale stockREPORTED INPUT / STAGE 3F2: Wada-selected amber coloration,black rim and vivid finsFOCAL STRAINAMERICAN / ENGLISH NAMEKotohime — Amber Black RimJAPANESE NAME (ROMAJI)KotohimeJAPANESE LETTERS (日本語)琴姫
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Breeder-described Beniazami x vermilion-amber transparent-scale input; F2 selected, not proof of gene dominance or contemporary stock Source: Medaka WEB Zukan No.0219, direct published breeder Wada F2 cross

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 029: Breeder-described Beniazami x vermilion-amber transparent-scale input; F2 selected, not proof of gene dominance or contemporary stock. 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

A Wada-attributed amber transparent-scale black-rim variety called Kotohime. The evidence below is based on a documented specialist variety entry, not independently verified laboratory genetics.

Claim-by-claim evidence

Research findingEvidence classDirect references
The specialist variety catalogue identifies Toshihiro Wada / 和田敏拓 as the original maker for the 2020 record.Documented specialty-catalogue attribution, not independently authenticated creator correspondenceK219 ↗
Amber body with transparent-scale traits and darker black-rim outlines around scale patterns.Source-defined phenotype and classification, not DNA genotypeK219 ↗
The specialist variety record lists Kotohime as a 2020 Wada-selected amber transparent-scale black-rim phenotype.Specialist historical selection summary; precise broodstock not verifiedK219 ↗
A black-rim continuous scale outline differs from isolated Nishiki-type black blotches; no exact parent mating is listed.Differentiation from another historical name or pedigree limitationK219 ↗

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

Known research gaps

  • No independently inspected original breeder register, genotype assay or complete individual parent-fish mating ledger is available.
  • Source attribution and the historical year should not be interpreted as confirmed first retail sale date or authentication of present-day fish.
  • External catalogue images are not republished without separately verified copyright/reuse permission.

Related profiles and lineages

Original research sources

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