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In this study, we first determined the complete mitochondrial genome sequence of Sinocyclocheilus jii, which is an endemic species to Southwestern China. The complete mitochondrial genome is 16,577 bp in length, consisting of 37 genes coding for 13 proteins, two rRNAs, 22 tRNAs, and one control region. Its gene arrangement pattern was identical to that of most vertebrates. Phylogenetic analysis using mitochondrial genomes of 11 species showed that nine Sinocyclocheilus species clustered as one monophyletic clade and S. jii was the most basal species on the phylogenetic tree of the Sinocyclocheilus fishes.