The posterior fin or caudal fin is slightly rounded. Lateral lines with a slight curve run over the pectoral fin and a complete lack of an accessory dorsal branch is found within this species. This species relies heavily on its strong anal spine for swimming.
The caudal fin has a gentle roundness. Lateral lines, which have a slight curvature, traverse over the pectoral fin, and there is no accessory dorsal branch in this species. This species primarily uses its robust anal spine to swim effectively.