Mitochondrial DNA COII gene sequence analysis and RAPD analysis were carried out to assess
the phylogenetic relationships of three colored strains of common carps, e.g., the ornamental (Koi)
carp from Japan, and the Oujiang color common carp as well as the Long-fin common carp from
China. Phylogenetic trees from two methods indicated Oujiang color common carp and Long-fin
common to be non-monophyletic, and Koi carp might have originated from China and shared a
common ancestor with Oujiang color common carp