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AQUAPEDIA / SOURCE-LINKED RESEARCH

Shinkai — Internal Blue

体内ブルー体外光無し / 深海

Historical Medaka varietyEvidence by claimIndependent review ongoing

Shinkai is a deep internal-blue Medaka variety with exterior Miyuki backlight reduced or absent.

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: Shinkai — Internal Blue; Japanese romaji: not verified; Japanese characters: 体内ブルー体外光無し / 深海. 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 1Marine Blue source populationREPORTED INPUT / STAGE 2Reduction in exterior shine / inner-blueselectionFOCAL STRAINAMERICAN / ENGLISH NAMEShinkai — Internal BlueJAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)体内ブルー体外光無し / 深海
Dashed connectors show breeder-reported input or selection history; they do not prove genetic parentage. Not a confirmed genotype or parent-fish identification.

Selected from Marine Blue family; not a proved cross Source: Medaka no Yakata Shinkai historical entry

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View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 20: 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

Shinkai is a deep internal-blue Medaka variety with exterior Miyuki backlight reduced or absent. Historical catalog creator attribution: Ryusei Nagaoka / 長岡龍聖 (Hyogo). The 2015 historical variety group is a documentary context, not proof of the first sale.

Claim-by-claim evidence

Research findingEvidence classDirect references
Historical catalog creator attribution: Ryusei Nagaoka / 長岡龍聖 (Hyogo).Historical maker credit or explicitly unknownH12 ↗
The archive reports selection from Marine Blue, whose dorsal shine can obscure the inner blue appearance.Specialist archival variety description; development steps may be omittedH12 ↗
Deep blue internal-body appearance, particularly striking in light-colored viewing containers; no defining dorsal exterior-light band.Historical observable phenotype, not a genetic assayH12 ↗
Base Shinkai is not the separate Shinkai Daruma short-bodied form already indexed on Aquapedia. Documented in the 2015 historical variety group.Editorial interpretation bound to historical catalog contextH12 ↗

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

Known research gaps

  • Precise commercial introduction dates, actual founder specimen IDs and complete generation-by-generation records are not fully documented in this catalog.
  • The named phenotype or historical breeding description is not a DNA-verified pedigree or a guaranteed inheritance ratio.
  • Current breeder-authenticated stock, precise strain-specific water parameters and photograph licensing remain unconfirmed.

Related profiles and lineages

Original research sources

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