Females and males of the broadfin shark species are sexually dimorphic. Females, on average, are larger than males, and it is reported that males mature at a smaller size than females. The reported size of females has decreased when compared with previous recordings of the species, with the new maximum size of females being around , while the reported size of males has increased. Another way to tell males and females apart is by looking at the end of their pelvic fins, as males possess calcified claspers (external appendage that aid in reproduction) on the ends of their pelvic fins.
