Ptychobarbus kaznakovi is endemic to the Qinghai-Tibet Plateau in China. The complete mitochondrial genome of P. kaznakovi was sequenced and characterized. The genome is 16 700 bp in length and contains 13 protein-coding genes, 2 ribosomal RNAs, 22 transfer RNAs, and a non-coding control region. The gene arrangement and nucleotide composition of the mitochondrial genome are similar to those of Cyprinidae fish. A 2 bp tandem repeat was identified in the control region. We conclude that the control region is variable in length between and within species. The complete mitochondrial DNA in this study should be used in the studies on population genetics and phylogeny of P. kaznakovi.
Keywords: Control region; Ptychobarbus kaznakovi; Schizothoracinae; mitochondrial genome; population genetics.