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AQUAPEDIA / SOURCE-LINKED RESEARCH

Pure Black Small Eye (Kurobee)

ブラックスモールアイ / 黒べえ

Historical Medaka research identityEvidence by claimIndependent review ongoing

An early small-eyed, dark-bodied Medaka selection historically called Pure Black or Kurobee.

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: Pure Black Small Eye (Kurobee); Japanese romaji: not verified; Japanese characters: ブラックスモールアイ / 黒べえ. Parent lines not documented. No pedigree or genetic connection can be drawn. Documented source links and evidence qualifiers follow the diagram.AQUAPEDIA / MEDAKA LINEAGE ATLASSTRAIN PEDIGREEANCESTRY UNKNOWNNO ANCESTRY CONNECTORS • RESEARCH GAPAn original source establishing the parent lines has not been located.ANCESTRY DATA GAPParent lines not documentedFOCAL STRAINAMERICAN / ENGLISH NAMEPure Black Small Eye(Kurobee)JAPANESE NAME (ROMAJI)Not verifiedJAPANESE LETTERS (日本語)ブラックスモールアイ / 黒べえ
Parent lines not documented. No pedigree or genetic connection can be drawn. Not a confirmed genotype or parent-fish identification.

This strain's direct parent lines are not established by the reviewed sources. No breeding cross, genotype or inheritance pattern is implied. Source: Sources remain under review; ancestry connections will appear only with cited evidence.

Browse the larger Medaka lineage atlas ↗

View this strain’s illustrated gene tree in Discord ↗

Lineage review · Batch 19: The reviewed records do not establish a defensible breeding cross; picture ancestry remains disconnected. Original specialist source ↗

Overview

An early small-eyed, dark-bodied Medaka selection historically called Pure Black or Kurobee. The farm says it developed this black Small Eye line in 2001, distinguishing it from ordinary brown-wildtype or container-dependent dark forms. Creator-versus-discoverer status is source-scoped.

Claim-by-claim evidence

Research findingEvidence classDirect references
Historical record: Yukio Oba / 大場幸雄 — Created, according to original farm.Archive maker or discoverer attributionE78 ↗
The farm says it developed this black Small Eye line in 2001, distinguishing it from ordinary brown-wildtype or container-dependent dark forms.Source-described historical breeding and development, not independently genotypedE78 ↗
Very dark body, small eyes and elongated facial proportions are the breeder-described distinguishing features.Visual phenotype only; individual expression can varyE78 ↗
The original page says a range of modern black lines may share its bloodline, but that broad universal ancestry claim is disputed rather than independently verified. Historical context: 2001.Editorial distinction grounded in cited source; exact sale dates not guaranteedE78 ↗

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

Known research gaps

  • Reports of reduced vision and low occurrence must not be converted into an individual animal health diagnosis.
  • Cited first-generation and selected-parent statements do not prove DNA genotype, inheritance rate or present-day breeder-stock identity.
  • No third-party breeder/catalogue image is reproduced; photo rights and original genetic records require independent review.

Related profiles and lineages

Original research sources

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