The average length of the spiny dogfish is 28-39 inches (70–100 cm), with adult males ranging from 24-35 inches (60–90 cm), and adult females ranging from 30-42 inches (76–107 cm). The maximum reported length of males is 39 inches (100 cm), and females is 49 inches (124 cm). Mature females can weigh as much as 3.2-4.5 kg (7-10 pounds), with a maximum recorded weight of 9.8 kg (22 pounds). The all-tackle game fish record is 7.14 kg (16 pounds), and was caught off the coast of Ireland in 1989.