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In this study, we obtained the complete mitochondrial genome of Hypseleotris cyprinoides , which was 16520 bp in length. The mitogenome contained 37 genes, including the typical set of 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, and 2 Ribosomal RNA (rRNA) genes. A, C, G, and T distribution was 28.57%, 29.91%, 16.99%, and 24.53%, respectively. The length of the total protein-coding genes was 11441 bp, which accounts for 66.80% of the whole mitochondrial genome. The Maximum Likelihood (ML) phylogenetic analysis based on the concatenated nucleotide sequences of 13 PCGs showed that H.cyprinoides as a sister species to Hypseleotris klunzingeri was clustered in the family Hypseleotris. The discovery of the complete mitochondrial genome of H.cyprinoides would help to conduct in-depth research on Hypseleotris.

The genus Allogalathea belongs to the subfamily Galatheoidea of the family Galatheidae. Here, we report a mitogenome of Allogalathea elegans (Adams & White, 1848). In this study, we obtained the complete mitochondrial genome of Allogalathea elegans by sequencing, which was 16,263 bp in length. The mitogenome contained 37 genes, including the typical set of 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, and 2 Ribosomal RNA (rRNA) genes. The nucleotides A, C, G, and T distribution was 36.40%, 19.44%, 9.09%, and 35.07%, respectively. The length of the total protein-coding genes was 11,172 bp, which accounts for 68.69% of the whole mitochondrial genome. The phylogenetic result generated by IQ-Tree based on 13 PGCs showed that the infraorder Anomura is monophyletic, and the infraorder Anomura is a sister group of the infraorder Glypheidea. The discovery of the complete mitochondrial genome of A. elegans would help to conduct in-depth research on the infraorder Anomura.