In this study, the complete mitogenome sequence of the Royal dottyback, Pictichromis paccagnellae (Perciformes: Pseudochromidae), has been sequenced by the next-generation sequencing method. The assembled mitogenome was of 16 976 bp in length, consisting of 13 protein-coding genes, 22 transfer RNAs, and two ribosomal RNAs genes. The overall base composition was 27.4% for A, 28.1% for C, 17.3% for G, and 27.2% for T and showed 76% identities to Fire-tail devil Labracinus cyclophthalmus in the same family. The complete mitogenome of P. paccagnellae provides essential and important DNA molecular data for further phylogeography and evolutionary analysis for Pseudochromidae.