Pangio kuhlii has the anguilliform (slender and eel-like) body typical of its genus, as well as pectoral fins placed much more anterior than the dorsal fin (Burridge, 1992).

Males have enlarged first fin ray on the pectoral fin and wider pectoral (and sometimes pelvic fins) in general (Burridge, 1992; Kottelat and Lim, 1993).