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 secondary-source foundation cross. Not a DNA-tested parent pair, genotype or guaranteed trait ratio. Source: Japanese Godzilla house-name catalogue (secondary report)
Identity, original name and look-alikes
Godzilla is sold under the Japanese house name ゴジラ. The name labels a selected ornamental lineage rather than a taxonomically separate species or a proven genotype. Japanese references credit 二代目アクアボーイ (Nidaime Aqua Boy) in Yamaguchi Prefecture as the developer. A Japanese hobby catalog reports July 2022 as the announcement month, which has not been verified against the creator's original dated announcement.
Appearance and diagnosis
Japanese specialty descriptions characterize Godzilla by dark internal pigmentation alongside green to blue-green dorsal external light (体外光). This metallic appearance can vary by lighting, viewing angle, dark versus light container and individual development. Select using consistent top-view and side-view photos of mature, provenance-labeled breeding stock rather than demanding a particular appearance in every juvenile.
Reported lineage and picture tree
Two Japanese secondary sources list a reported 墨武 (Bokubu / Bobu) × クロコダイル (Crocodile) foundation cross. These are names of contributing hobby lineages, not individually identified male and female breeders. The illustrated lineage chart therefore uses dashed uncertain arrows; it does not assert DNA-tested genes, fixed transmission, alleles, dominance, a single universally identical parent pair or quantitative inheritance percentages. Confirm actual stock history with the cred
History, creator and attribution
The catalog cites Yamaguchi-based Nidaime Aqua Boy and a 2022-07 announcement. A Japanese breeder magazine separately identifies the Nidaime Aqua Boy creator with Godzilla in a breeder profile. Later retailers describe their own Godzilla selections; these should not be confused with a new creator or presumed direct lineage documentation.
Grading and authentication
Record black-body intensity separately from the continuity, placement and hue of green-blue external light, body conformation and fin health. No universal numerical Godzilla grading rubric or validated fixed percentage is established in these sources. Evaluate breeder-marked individual fish photographs and repeatable offspring quality across generations; do not certify a pedigreed Godzilla solely by visible color.
Husbandry, food and compatibility
Use ordinary healthy Oryzias latipes husbandry: stable dechlorinated freshwater, suitable filtration or well-maintained outdoor tubs, careful acclimation, appropriate cover and access to oxygen. Provide a suitable small omnivore staple and age-appropriate fry foods; observe feeding competition and isolate incoming stock for quarantine. No peer-reviewed Godzilla-specific water-chemistry optimum, disease susceptibility or food requirement was found. Avoid inventing temperature,
Breeding and gene documentation
Track actual male and female parent IDs, seller, breeder, purchase date, generation, photographs at consistent illumination, offspring phenotype distribution and exceptional deviations. Continue selecting black pigmentation, external light and vigor without assuming an expected Mendelian outcome. The two claimed foundation names do not constitute verified allelic information. A dated, creator-confirmed family tree remains an open evidence request.
Distribution and similar names
Some sellers offer Godzilla descendants or retailer-specific selected variants described as stronger external light. Such stock is not necessarily genetically identical to the original creator's fish. One Aquaphoria sales description says its U.S.-bred juveniles descend from parent fish imported from Japan; this is a seller-specific claim and must not be generalized to every Godzilla seller or turned into a breeder-of-origin claim.
Evidence ledger and pending verification
Publication rule: This is a referenced research-stage profile, not a creator-endorsed genetic certificate. No third-party specimen photographs are copied, embedded or redistributed without a documented reuse grant.
Public research references
Listed research leads are not automatically supporting evidence for every individual claim.