Mitogenomic analyses uncover significant genetic differentiation between different geographic populations of <i>Acrossocheilus fasciatus</i>

<i>Acrossocheilus fasciatus</i> is a stream-dwelling Barbinae fish with attractive striped appearance and high commercial values. In this study, we assembled the mitogenomes of 128 <i>A. fasciatus</i> individuals from eight different geographic populations and analyzed their nucleotide variations and genetic differences. A total of 904 non-redundant SNPs and four InDel sites were identified in these geographic populations compared with the reference mitogenome. The results of phylogenetic analysis and divergence time estimation revealed that QingYiJiang River (QYJ) population exhibits significant genetic differences and diverged about 1.36 Mya from other geographic populations, suggesting that QYJ population may have evolved into a distinct species.