# The complete mitochondrial genome of a Biwa goby, Gymnogobius isaza (Tanaka, 1916)

## TL;DR

This paper reports the full mitochondrial genome of the Biwa goby, a fish species, and shows how it relates to other similar species.

## Contribution

The study provides the first complete mitochondrial genome sequence for Gymnogobius isaza and confirms its close relationship with G. petschiliensis.

## Key findings

- The mitogenome of G. isaza contains 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and two control regions.
- Phylogenetic analysis shows a close relationship between G. isaza and G. petschiliensis.
- The mitogenome data can aid in environmental DNA surveys and conservation efforts for the species.

## Abstract

We determined the complete mitochondrial DNA sequence of a Biwa goby, Gymnogobius isaza (Tanaka, 1916) using next-generation sequencing methods. The composition of its mitogenome is the same as that observed in most other vertebrates, comprising of 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and two control regions. Our molecular phylogenetic analysis confirmed the close phylogenetic relationship between G. isaza and G. petschiliensis. This mitogenome information will be useful for distribution surveys using environmental DNA and the development of conservation strategies for this species.