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AQUAPEDIA / SOURCE-LINKED RESEARCH

IB Blue — Kiguchi Selection

IBブルー

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

Kiguchi describes repeatedly crossing blue-internal-light transparent-scale stock with Miyuki-type internal-light fish.

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: IB Blue — Kiguchi Selection; Japanese romaji: not verified; Japanese characters: IBブルー. 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 1Transparent-scale stock carryinginternal blue reflectionREPORTED INPUT / STAGE 2Miyuki stock carrying internalreflective lightREPORTED INPUT / STAGE 3Repeated crosses and breeder selectionfor side/top visible blueFOCAL STRAINAMERICAN / ENGLISH NAMEIB Blue — Kiguchi SelectionJAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)IBブルー
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Breeder reports repeated crossing of internal-blue transparent-scale fish with Miyuki internal-light stock; no individual pair or dominance established. Source: Japan Medaka Universe original Kiguchi IB Blue breeder account

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 031: Breeder reports repeated crossing of internal-blue transparent-scale fish with Miyuki internal-light stock; no individual pair or dominance established. Original specialist/breeder source ↗

Lineage review · Batch 017: The review has not established a defensible original breeding pair. The picture ancestry node remains deliberately disconnected. Specialist source ↗

Overview

Kiguchi describes repeatedly crossing blue-internal-light transparent-scale stock with Miyuki-type internal-light fish. This account distinguishes original founder varieties, named selected variants, and unfinished breeder projects.

Claim-by-claim evidence

Research findingEvidence classDirect references
Developer role: Hidekiyo Kiguchi / 木口秀清 (Romanization provisional) — Breeder-submitted original selection developer.Breeder-submitted role, separate from original source-stock creatorsJMU ↗
The breeder reports multiple breeding steps intended to improve transparency and internal blue visibility from side and top in white or black containers.First-person breeding/selection account; publication and sale chronology not independently completeJMU ↗
Visible internal-blue appearance across side/top viewing backgrounds; this is reflected-light appearance, not bioluminescence.Observed or intended visual selection; not a genetic trait testJMU ↗
Claimed ease of inheritance is a breeder observation without reproduced segregation data or molecular test.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.