Koiridae

Koiridae is a proposed but unrecognized family of freshwater fishes within the order Cypriniformes. The name has appeared in a limited set of taxonomic discussions, but it is not listed by major reference databases such as FishBase, ITIS, or the Catalogue of Life. Consequently, there is no formally accepted type genus, diagnostic description, or circumscription for Koiridae, and species that have been associated with the name are usually treated as members of Cyprinidae or related cypriniform groups in standard classifications.

Taxonomic status of Koiridae remains unsettled. Because the concept lacks a formal description and broad consensus, Koiridae is best regarded as an informal or hypothetical name rather than an official taxon. Its occasional appearance in literature reflects ongoing debates about the internal taxonomy of Cypriniformes, rather than the emergence of an accepted new family.

Description and distribution are not defined in recognized taxonomic references. Without a formal diagnosis, no reliable morphological, genetic, or biogeographic criteria can be cited for Koiridae. In discussions where the name is used, it is typically as part of a speculative revision rather than as a confirmed lineage.

In summary, Koiridae is not an officially recognized taxonomic group. For authoritative classifications, fishes traditionally placed in or near Cypriniformes remain within Cyprinidae or other established families, and Koiridae serves as a historical or hypothetical footnote in debates over cypriniform systematics. See also Cypriniformes, Cyprinidae, and standard reference works such as FishBase and ITIS.