Phylogenetic and Morphological Analysis of Bostrychus sinensis (Gobiiformes: Eleotridae) from Musi River, South Sumatra

Sofian Sofian (Department of Fisheries Science, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Selviani Selviani (Department of Marine Science Study Program, Faculty of Fisheries and Marine Sciences, Lambung Mangkurat University, Banjarmasin, South Kalimantan, Indonesia)
Indah Anggraini Yusanti (Department of Fisheries Science, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Humairani Humairani (Department Fisheries Socio-Economic, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Sujaka Nugraha (Department of Aquaculture, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Leni Maryani (Department of Marine Science, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Rahma Mulyani (Department of Aquaculture, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Ahmad Sundoko (Department of Marine Science, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Nadia Jely Monica (Department of Fisheries Science, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Haspen Wijaya (Department of Fisheries Science, Faculty of Fisheries and Marine Sciences, University of PGRI Palembang, Palembang, Indonesia)
Iwan Kuncoro (Department of Marine Science, Faculty of Mathematics and Natural Sciences, Tanjungpura University, Pontianak, West Kalimantan, Indonesia)
Fazril Saputra (Department of Aquaculture, Faculty of Fisheries and Marine Science, Teuku Umar University, Meulaboh, Aceh, Indonesia)

Jurnal Perikanan Universitas Gadjah Mada
Vol 28, No 1 (2026)

Bostrychus cf. sinensis, a member of the family Eleotridae, was first identified in the Muara Telang region, Banyuasin, South Sumatra. Specimens collected from tidal channels were subsequently analyzed genetically using DNA barcoding with the Cytochrome Oxidase Subunit 1 (COI) gene. The molecular analysis revealed that the Muara Telang specimens shared 98.55% genetic similarity with Bostrychus sinensis from the Seom River, South Korea. According to genetic guidelines, a divergence greater than 3% may indicate a distinct species. The genetic divergence observed was 0.243, equivalent to 243 nucleotide variations out of 1,000 bases analyzed. Phylogenetic analysis showed that Bostrychus cf. sinensis from Muara Telang clustered within the same clade as Bostrychus sinensis but still exhibited genetic polymorphism at 8 distinct sites. Therefore, this specimen was designated as Bostrychus cf. sinensis. The COI gene sequence data for Bostrychus cf. sinensis from Muara Telang have been deposited in GenBank under accession MK777294.1.