# Complete mitochondrial genome of the hybrid flounder Paralichthys olivaceus (♀) × Verasper variegatus (♂)

## TL;DR

This paper reports the complete mitochondrial genome of a hybrid flounder species and its genetic relationships.

## Contribution

The study provides the first complete mitochondrial genome of the hybrid flounder P. olivaceus × V. variegatus.

## Key findings

- The hybrid flounder's mitogenome is 16,946 bp long with typical mitochondrial gene content.
- Phylogenetic analysis shows the hybrid clusters with P. olivaceus.
- The hybrid exhibits intermediate traits and potential economic value.

## Abstract

Two generations were hatched after artificially crossing Paralichthys olivaceus and Verasper variegatus, commercially valuable species of Pleuronectidae. Here, we report the complete mitochondrial genome and phylogenetic relationships of P. olivaceus (♀) × V. variegatus (♂). The mitogenome is 16,946 bp long and contains 13 protein-coding genes (PCGs), 22 tRNA genes, and 2 rRNA genes. Phylogenetically, it clustered with P. olivaceus within Pleuronectidae, providing a justification for the lack of information on flounder hybrids. Analysis of genetic information and genetic mapping studies of individuals with intermediate traits between the parents support previous research suggesting that it has economic value.