Picture gene & lineage tree
Visual pedigree of breeder-reported inputs, where available. Dashed arrows represent documentary claims or selection history, not DNA-tested genes.
Reported specific foundation stock cross; 6/100 F1 with spot lame and red-white/tricolor F2; no DNA genotype or exact pedigree certificates Source: Medaka WEB Zukan No.0258 (Wada, 2020, breeder development account)
Browse the larger Medaka lineage atlas ↗
View this strain’s illustrated gene tree in Discord ↗
Lineage review · Batch 20: The reviewed records do not establish a defensible breeding cross; picture ancestry remains disconnected. Original specialist source ↗
Overview
Wada's distinctive discontinuous exterior-light selection where isolated reflectors appear as spots. The evidence below is based on a documented specialist variety entry, not independently verified laboratory genetics.
Claim-by-claim evidence
| Research finding | Evidence class | Direct references |
|---|---|---|
| The specialist variety catalogue identifies Toshihiro Wada / 和田敏拓 as the original maker for the 2020 record. | Documented specialty-catalogue attribution, not independently authenticated creator correspondence | S258 ↗ |
| Separate spot-like exterior-light patches rather than a continuous reflective band across the back. | Source-defined phenotype and classification, not DNA genotype | S258 ↗ |
| The speciality catalog credits a 2020 Wada development of exterior-light areas that appear as individually delineated spots. | Specialist historical selection summary; precise broodstock not verified | S258 ↗ |
| Spot Lame is a descriptive exterior-light expression, not automatically the same as every ordinary reflective lame scale. | Differentiation from another historical name or pedigree limitation | S258 ↗ |
Evidence labels refer to documentary strength. They do not assert independently tested genetics.
Known research gaps
- No independently inspected original breeder register, genotype assay or complete individual parent-fish mating ledger is available.
- Source attribution and the historical year should not be interpreted as confirmed first retail sale date or authentication of present-day fish.
- External catalogue images are not republished without separately verified copyright/reuse permission.
Related profiles and lineages
Original research sources
Every row above links directly to its cited reference; publication or creation years are not interchangeable.
- S258: Medaka WEB Zukan No.0258: Spot Lame — 2020 source-attributed developer/phenotype