Identity and category
Koi / Tancho · trade lines: Japanese importer catalog · documented commercial line
Species and lineage
Poecilia reticulata trade / ornamental context. No parentage independently confirmed. The term documents a naming convention or phenotype, not necessarily a stable distinct breeding line.
Evidence limits
Documented name; a stable pure-breeding pedigree has not been independently verified
References
Original standard or named-trade evidence ↗
Linked sources may verify use of a name or class, not genetics, pedigree, welfare or origin.