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Hemiculterella sauvagei, a Chinese minnow endemic to the upper Yangtze River, is an important part of the aquatic ecosystem and plays a vital ecological role in maintaining aquatic biodiversity. In this study, we provide the first mitochondrial genome ofH. sauvagei. The complete mitochondrial genome ofH. sauvageiis 16618 bp in length, containing 13 protein-coding genes, two rRNA genes (12 S and 16 S rRNA), 22 tRNA genes and a non-coding control region (D-loop). The gene nucleotide composition ofH. sauvageiis A = 29.9%, T = 27.0%, C = 17.4% and G = 25.6%, with a slight AT bias of 56.9%. The complete mitochondrial genome ofH. sauvageiwould be useful for further studies on genetic diversity and molecular phylogenetic relationship of the subfamily Cultrinae. [ABSTRACT FROM AUTHOR]

Toxabramis houdemeribelongs to the genusToxabramisin the subfamily of Cultrinae (Cyprinidae). We first determine the complete mitochondrial genome ofT. houdemeriin this study. It is 16 618 bp in length, with the base composition on the heavy strand: 30.79% A, 16.61% G, 27.29% C, and 25.31% T. It has the typical vertebrate mitochondrial gene arrangement, including 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and a D-loop region. Phylogenetic analysis showed thatT. houdemeriwas clustered into one branch of the subfamily of Cultrinae, and closely related toHemiculter leucisculus. The present study will contribute to genetic resources conservation ofT. houdemeriand studying its population genetic structure and phylogenetic relationships. [ABSTRACT FROM PUBLISHER]