Picture gene & lineage tree
Visual pedigree of breeder-reported inputs, where available. Dashed arrows represent documentary claims or selection history, not DNA-tested genes.
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.
Identity, taxonomy and naming
Lecris is the original 2021 ornamental Medaka house-name レクリス, described by the creator using the English word Reckless. Mai Medaka explains that the name refers to an audacious breeding effort. This is a named ornamental strain/phenotype, not a separately described species. Japanese variety catalog No. 0871 records the morphological classification 黄半透明鱗ラメヒレ長メダカ: yellow body, semi-transparent or Aurora-type scale appearance, reflective lame on individual scales, and long fins
Original breeder, history and provenance
The breeder's own 2021 blog introduces the gold-shining Lecris by the name レクリス ☆ reckless and highlights golden pectoral fins. Mai Medaka's current official variety lineup independently identifies Reckless as a golden, long-finned, densely fine-lame selection developed after adventurous crossing. Japanese WEB Zukan records 2021 as the creation year and 舞めだか as the developer. Those accounts support the house-name attribution, but neither a primary parent-pair genealogy nor DN
Appearance, diagnostic traits and grading
Look for a bright yellow-gold body, Aurora or semi-transparent scale expression, dense reflective lame visible from above, and gracefully extended fins with golden color visible in side view. JASMA's secondary variety guide describes the long-fin morphology as Matsui-type; do not infer the exact genetic allele in a given fish merely from that descriptive term. Evaluate mature, breeder-provenance individuals from both top and side views with repeatable illumination. No univers
Genetics and source-backed gene tree
Parent lines not documented. The breeder explains the name as reflecting audacious crossing, but does not identify the actual foundation breeding fish in the original Lecris release accounts cited here. An illustrated lineage should consequently show no fabricated parental links. Selection for gold tone, lame density, fin extension and healthy body conformation is not evidence for a simple dominant or recessive genotype. Document actual parent identifiers and generation count
Original Lecris versus Lecris Unlimited
Lecris Unlimited (レクリス・アンリミット) is a separately marketed derivative breeding programme described in Mai Medaka's later first-person writing. Aquapedia covers this derivative in its own existing page; the later Unlimited programme's reported contributing stocks must not be back-projected as the original 2021 Lecris founder cross. Similar names used in wholesale lists may designate further selected stock, not genetically interchangeable animals.
Reris name disambiguation
The isolated research-inbox query Reris is not a confirmed alias of Lecris, Reckless or Lecris Unlimited. Neither the original request nor reviewed Japanese primary sources link the exact spelling to this variety. Request original Japanese characters, creator or seller provenance and dated fish photographs before merging names or marking the pending Reris research complete. This Lecris profile does not resolve that separate identification request.
Husbandry, compatibility and nutrition
Keep as ornamental Oryzias latipes in stable conditioned freshwater with suitable oxygenation, cover, gentle maintenance and age-appropriate omnivorous foods. Observe actual fry feeding and growth and avoid crowding. JASMA notes that extended fins can be more susceptible to tearing and that some breeders observe somewhat fewer eggs than certain standard types; these are observational husbandry reports, not controlled measurements or a proven genetic disadvantage. No Lecris-sp
Breeding, health and line authentication
Record breeder and stock origin, fish identifiers, appearance under consistent lighting, egg/fry development, and distribution of visible traits in each generation. Select robust breeding animals as well as attractive lame and fins. Do not claim fixed inheritance, guaranteed offspring ratios, quality grades, disease susceptibility or a named individual parent pair without primary documentation. Fresh fish should undergo ordinary biosecurity and quarantine before introduction
Source ledger, claim confidence and open questions
Publication boundary: No third-party fish photography or translated protected passages are reproduced; referenced images remain with their original rights holders. This research-stage strain profile does not imply breeder endorsement or genetic certification.
Public research references
Listed research leads are not automatically supporting evidence for every individual claim.