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Yunnanilus pulcherrimus belongs to the genus Yunnanilus within the subfamily Nemacheilidae, endemic to Guangxi province, Southwestern China. In this study, we sequenced the complete mitochondrial genome of Y. pulcherrimus and submitted the genome into GenBank with accession number MK387705. The complete mitochondrial genome is 16,573 bp in length, consisting of 37 genes coding for 13 proteins, two rRNAs, 22 tRNAs, and one control region. Phylogenetic analysis using mitochondrial genomes of 16 species showed that Y. pulcherrimus was first grouped with micronemacheilus cruciatus as a monophyletic clade, but not including Y. jinxiensis.

Aphyocypris pulchrilineata is a miniature cyprinid fish that only found in the streams or the underground river outlet of Hongshui River and Liujiang River, Southwestern China. The complete mitochondrial genome is 16,610 bp in length, consisting of 37 genes coding for 13 proteins, two rRNAs, 22 tRNAs, and one control region with 936 bp long. Phylogenetic analysis using mitochondrial genomes of 16 species showed that the genus Aphyocypris, Yaoshanicus, Pararasbora, and Nicholsicypris clustered as a monophyletic clade with strong supports, and A. pulchrilineata was the most basal species in this clade.

Sinocyclocheilus yishanensis belongs to the genus Sinocyclucheilus (Cypriniformes, Cyprinidae), endemic to Guangxi province, Southwestern China. The circular mitogenome was 16,573 bp in length and consisted of 13 protein-coding genes, two ribosomal RNA (rRNA) genes, 22 transfer RNA (tRNA) genes, and one non-coding control region. The overall base composition was 31.83% A, 25.14% T, 27.03% C, and 16.00% G with 43.03% GC content. Phylogenetic analysis using mitochondrial genomes of 16 species showed that all Sinocyclocheilus species clustered as one monophyletic clade except S. jii, and S. yishanensis was the closest to S. ronganensis.

Cophecheilus bamen is a freshwater cyprinid fish that endemic to Jingxi and Tiandong county, Southwestern China. In this study, we first determined the complete mitochondrial genome sequence of C. bamen. The circular mitogenome was 16,588 bp in length and consisted of 13 protein-coding genes, two ribosomal RNA (rRNA) genes, 22 transfer RNA (tRNA) genes, and one non-coding control region. Phylogenetic analysis using mitochondrial genomes of 16 species showed that C. bamen is supported as a single monophyletic clade and sister to the Parasinilabeo, Pseudogyrinocheilus, Semilabeo, Discogobio, Pseudocrossocheilus (synonymy: Sincrossocheilus), and Ptychidio genus.

White-striped long-horned beetle, Batocera lineolata occurred in China, Vietnam, Myanmar, India, Japan and Korea and is one of the most important wood-boring forestry pests. Complete mitochondrial genome was determined based on next-generation sequencing. The long-horned beetle has a total length of 15,420 bp, consisting of 13 protein-coding genes (PCGs), 22 tRNA, 2 rRNA genes and a non-coding region. The phylogenetic position was closely clustered with 6 other Lamiinae species with strong node support. Within Chrysomeloidea superfamily, a monophyletic Lamiinae clad is recovered as the sister group of the Cerambycinae from three species and the Chrysomelidae consisting five species forms a monophyletic clade which is strongly supported.

In this study, we report the complete mitochondrial genome of Sinocyclocheilus ronganensis. The whole mitochondrial genome is 16,587 bp with an accession number KX778473, and consists of 13 protein-coding genes, 2 ribosomal RNAs, 22 transfer RNAs genes, and a 936 bp control region. Phylogenetic analysis shows that S. ronganensis is close to cave-restricted S. anophthalmus and surface-dwelling S. grahami. The complete mitogenome of S. ronganensis may provide useful information for studying the genetic mechanism of cavefish, and enrich the fish mitochondrial genome resource for further research.