Normalized lineage
夜桜 ♀ × オーロラ黄ラメ ♂ → ラメ王 (creator attribution: 道三めだか; 2021 announcement reported by JASMA).
ラメ王 × 松井ヒレ長オーロラ黄ラメ → working/early name ラメ王・改 → selected expressions reported as ヒミツヘイキ (normal fin) and シンヘイキ (long fin).
Parent sex for the second cross is unknown from the reviewed sources. Do not infer it.
Sources
3. メダカ屋えん 楽天市場 — ヒミツヘイキ lineage/working-name history
Public research references
Listed research leads are not automatically supporting evidence for every individual claim.
No eligible public supporting URLs are attached to this summary yet.