Complete mitochondrial genome of the freshwater fish, Acheilognathus somjinensis (Cypriniformes, Cyprinidae)

The complete mitochondrial genome was sequenced from the freshwater cyprinid fish, Acheilognathus somjinensis. The genome sequence is 16,569 bp in size, and the gene order and contents are identical with the congeneric species A. yamatsutae, A. koreensis and A. intermedia. Of 13 protein-coding genes (PGCs), three genes (CO2, CO3, Cytb) had an incomplete stop codon as shown in the genus Acheilognathus. The base composition of A. somjinensis showed anti-G bias (13.58% and 12.21%) on the second and third positions of PCGs but not high (4.8% on the third position of PCGs) as present in the river lamprey, Lampetra japonica.