Dissemination of Misgurnus nikolskyi (Cobitidae) in the South of Western Siberia

Data on new findings of the Nikolsky loach Misgurnus nikolskyi in the south of Western Siberia are presented. The maximum distance from the place of the first detection is about 200 km downstream of the Ob River. It has been suggested that the main method of dispersal of the Misgurnus nikolskyi in this region is deliberate introduction. It has been shown that the mtDNA haplotypes of the cyt b locus of the Misgurnus nikolskyi from the Ob River basin are identical to those described from the Lower Amur River basin.