First complete mitochondrial genome of the endemic goby, <i>Rhinogobius davidi</i> (Gobiiformes: Gobiidae: Gobionellinae), in China

The first complete mitochondrial genome of the freshwater goby <i>Rhinogobius davidi</i> was determined by high-throughput sequencing. This genome was 16,627 bp in length and consisted of 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes, and 2 non-coding control regions. Phylogenetic analysis based on the amino acid sequences of 13 mitochondrial protein-coding genes from <i>R. davidi</i> and 23 relatives suggested that <i>R. davidi</i> had a close mitogenome relationship with <i>Rhinogobius giurinus</i>. This complete genome of <i>R. davidi</i> will provide basal molecular data for future studies on taxonomy, comparative genomics, and adaptive evolution in <i>Rhinogobius</i>.