Marble goby, Oxyeleotris marmorata (Bleeker) is a large-scale invasive goby in China. In this study, the mitochondrial genome of marble goby was firstly determined. The entire mtDNA sequence was 16,556 bp in length with 13 protein-coding genes, 22 transfer RNA genes (tRNAs), 2 ribosomal RNA genes (rRNAs) and control region (CR). Its mitochondrial genome has the common features with those of other bony fishes with respect to gene arrangement, base composition, and tRNA structures.

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Yongeichthys criniger belongs to Gobiidae, Gobioidei, and Perciformes in taxonomy. Its mitochondrial genome was first determined, which consists of 13 typical vertebrate protein-coding genes, 22 tRNA, 2 rRNA genes, and 1 control region. The mitogenome base's composition is 27.28% for A, 26.12% for T, 28.98% for C, and 17.62% for G. The phylogenic analysis involves 32 Gobiidae species in GenBank database. The results will provide more molecular information for the further studies on species identification and phylogenic evolution of Gobiidae.