was previously synonymized with S. angustiporus
, but through the comparison of the specimens collected from Luxi County (type locality of S. aluensis
) and type specimens of S. angustiporus
, we identified several clear and stable characteristics to distinguish them. These findings suggest that S. aluensis
should be considered as a valid species, as it can be distinguished from S. angustiporus
by the position of the dorsal-fin insertion (posterior to vs. opposite to the pelvic-fin insertion), eye (22.4%-29.7% vs. 26.4%-38.9%, percentage of head length), eye-ball diameter (16.0%-23.6% vs. 21.3%-29.0%), and interorbital width (21.0%-32.3% vs. 19.7%-22.6%).