The complete mitochondrial genome of <i>Triplophysa grahami</i> Regan 1906 (Cypriniformes: Nemacheilidae) and phylogenetic analysis

<i>Triplophysa grahami</i> Regan 1906 is a member of the family Nemacheilidae, Cypriniformes, and native loach in Yunnan. In this study, the complete mitochondrial genome (mitogenome) of <i>T. grahami</i> Regan 1906 was firstly reported and analyzed. The mitogenome of <i>T. grahami</i> Regan 1906 is 16,566 bp in length, including 13 protein-coding genes (PCGs), 22 transfer RNAs (tRNAs), two ribosomal RNAs (rRNAs), and one control region (D-loop). The arrangement and orientation of protein coding genes and RNAs in <i>T. grahami</i> Regan 1906 are identical to other species of Nemacheilidae. The base composition of <i>T. grahami</i> Regan 1906 mitogenome was 29.25% A, 28.55% T, 25.03% C, and 17.17% G. The phylogenetic analysis based on the mitogenome showed that <i>T. grahami</i> Regan 1906 belongs to the clade of genus <i>Triplophysa</i> and the monophyly of <i>Triplophysa</i> is identified. This study contributed valuable genetic data for <i>T. grahami</i> Regan 1906 and explored the phylogenetic relationships in Nemacheilidae.