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AQUAPEDIA / SOURCE-LINKED RESEARCH

Tenkai (Savanna line)

天界

Medaka breeder-documented selection lineEvidence by claimIndependent review ongoing

Savanna reports a 2021 breeding program combining Black Lame Miyuki Sapphire-family and Aurora Yellow Lame Miyuki stock.

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: Tenkai (Savanna line); Japanese romaji: not verified; Japanese characters: 天界. 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 1Black Lame Miyuki Sapphire lineREPORTED INPUT / STAGE 2Aurora Yellow Lame MiyukiFOCAL STRAINAMERICAN / ENGLISH NAMETenkai (Savanna line)JAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)天界
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.16

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Overview

This is a separate named line in the catalog, not an alias of Aloe or Sunshine, and its development timeline must be distinguished from first release. The catalog is a first-party account, not independent genetic confirmation.

Claim-by-claim evidence

Research findingEvidence classDirect references
The breeder reports beginning with Black Lame Miyuki Sapphire-series × Aurora Yellow Lame Miyuki stock. (Savanna Vol.1, printed p.16)One first-party breeder source; independent review ongoingS2 ↗
The catalog assigns 2021 to the start of this crossing/selection project. (Savanna Vol.1, printed p.16)One first-party breeder source; independent review ongoingS2 ↗
The breeder reports continuing generations several years after its initial presentation. (Savanna Vol.1, printed p.16)One first-party breeder source; independent review ongoingS2 ↗
Its 2021 project-start date is not proof that a finished commercial Tenkai line was released that same year. (Savanna Vol.1, printed p.16)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 Tenkai. Dashed connectors show breeder-reported input or selection history; they do not prove actual parent pairs, alleles, or dominance.REPORTED INPUT / STAGE 1Black Lame Miyuki Sapphire lineREPORTED INPUT / STAGE 2Aurora Yellow Lame MiyukiFOCAL STRAINTenkai
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.16. Dashed means breeder-reported; the original source alone does not prove inherited traits.

Known research gaps

  • Founder fish, genotype and first sale date remain unverified.
  • This name requires careful differentiation from other house names using 天界.
  • 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.