Percocypris retrodorsalis is an endemic species found in Nujiang River and Lantsang. In this study, the complete mitochondrial genome of P. retrodorsalis was determined. The circular mitochondrial genome was 16,576 bp long, containing 13 protein-coding genes, two ribosomal RNA genes (rRNA), 22 transfer RNA (tRNA) genes, an origin of light-strand replication (OL), and one displacement loop locus (D-loop). Most genes were encoded on the heavy strand except for ND6 and eight tRNA genes. There were 11 regions of gene overlaps totaling 29 bp and seven intergenic spacer regions totaling 37 bp. The phylogenetic analyses were performed on the concatenated dataset of 28 protein-coding genes (PCGs), and the fishes of genus Percocypris may have a close relationship with Schizothoracins (Schizothoracinae) compared to other Cyprinidae fishes.

背叶鲈是在怒江和澜沧江发现的特有物种。在这项研究中，确定了P. retrodorsalis的完整线粒体基因组。环状线粒体基因组长16576 bp，包含13个蛋白质编码基因，两个核糖体RNA基因（rRNA），22个转移RNA（tRNA）基因，轻链复制（OL）的起源和一个置换环基因座（D -循环）。除ND6和8个tRNA基因外，大多数基因都在重链上编码。有11个基因重叠区，总计29 bp，七个基因间隔区，总计37 bp。在28个蛋白质编码基因（PCG）和属鱼类的级联数据集上进行了系统发育分析与其他鲤科鱼类相比，Percocypris与Schizothoracins（Schizothoracinae）可能有密切的关系。