The pectoral fins are very large and triangular, angled so that water flowing over them presses the fish against the riverbed, helping them to stay in position in fast-flowing water. The pelvic fins are set underneath the head. The dorsal and anal fins have very long bases, the dorsal fin extending for nearly half of the body length.
In fast-moving water, the pectoral fins serve as a stabilizing force, pressing the fish against the riverbed due to their triangular shape and angled position. The pelvic fins are located below the head, while the dorsal and anal fins have extended bases that cover most of the body's length.