Mystus mysticetus, a member of the Bagridae family, is represented by three dark longitudinal stripes running vertically below the lateral line, a dark black spot at the back of the operculum, a gray-black margin, an adipose dorsal fin that is short-tall and quite a distance from the dorsal fin (Phan et al., 2022;Tran et al., 2013;Vo et al., 2021). The Mystus is of genera of the family Bagridae, a family of fish native to Africa and Asia (Berg, 1858), with about 21 genera and 89 species (Fricke et al., 2022). In Vietnam, species of the genus Mystus are concentrated in the Mekong Delta (VMD) and some other localities in the central and northern regions of Vietnam.According to FAO, in the Mekong River basin, there are 13 species of the genus Mystus, typically M. atrifasciatus (Fowler, 1937), M. vittatus