Lineage visualization
View the reported Neptune → Rayquaza lineage tree ↗. Parental relationships are research claims, not DNA verification.
Identity and naming
Preferred search name: Neptune. Japanese name/label: ネプチューン. Confirm breeder-designated writing, pronunciation, and distinct-line status before public catalog promotion.
Quick facts and husbandry
Freshwater ornamental medaka. No strain-specific controlled water-parameter optimum was found in the reviewed references. General O. latipes husbandry applies; avoid claiming a bespoke temperature/pH target without studies or primary keeper records. Stable conditioned water, temperature consistency, appropriate oxygenation, cover, biosecurity and quarantine are prudent husbandry practices.
Appearance and diagnostic phenotype
Selection for blue lame extending toward the snout, especially head-region blue sparkle; compare breeder-confirmed photos.
Grade criteria: Inspect multiple top- and side-view images of identified breeder stock under consistent light; evaluate the claimed defining expression separately from individual quality. No validated numeric grade threshold was located.
Genetics and reported lineage
Documented/reported cross: (Miyazakura / 宮桜 x Himitsu Heiki / ヒミツヘイキ) x Saboten / サボテン
Evidence interpretation: Breeder catalogue supports parent formula and selection goal; not a proven single-gene cross.
Do not infer dominant/recessive loci, trait percentages, guaranteed fry phenotypes or genetic fixation from this pedigree alone. Keep records of each actual parental pair and offspring generation.
Creator, lineage and history
Medakaya Savanna (メダカ屋サバンナ), as described in its catalogue
Precise release year and original breeder distribution should remain unverified unless supported in the evidence below.
Breeding and selection
Record parent provenance; photograph paired breeders, eggs/fry and juveniles by generation; tally appearance and body types at maturity; retain ordinary segregants rather than assuming every offspring carries the advertised expression. Quantitative inheritance data remain unknown.
Health, nutrition and compatibility
Use standard medaka juvenile/adult feeding and observe body type and fin condition. Do not assume variant-specific medical needs or environmental tolerance without evidence. Species is usually maintained with other appropriately sized peaceful fish; individual competition, fin form and quarantine must be assessed case by case.
Open verification tasks
Confirm official catalogue publication date and genotype; no controlled offspring ratios known.
Aquapedia publication decision: retain as a research dossier with explicit evidence state; do not promote uncertain trade subtypes to fully verified independent strains.
Public research references
Listed research leads are not automatically supporting evidence for every individual claim.