The complete mitochondrial genome sequence of Xenocypris davidi (Bleeker).

Xenocypris davidi is a member of Cyprindae and widely distributed in China. To understand the systematic status of this species, we sequenced the whole mitochondrial genome of Xenocypris davidi. The complete mitochondrial genome is 16,630 bp in length including the typical structure of 22 tRNA, 2 rRNA, 13 protein-coding genes and the non-coding region. The major non-coding sequence which is the control region containing 6 CSBs (CSB-1, CSB-2, CSB-3, CSB-D, CSB-E and CSB-F). The second non-coding sequence is the origin of light-strand replication (OL). This region has the potential to fold in a step-loop secondary structure. The mitochondrial genomic sequence will help us to study the conservation genetic and evolution of Xenocypris.