This large skate is slow-growing and long-lived (3) (4), taking at least 6 or 7 years to reach maturity (5), and potentially living for up to 18 years (1) (2). In captivity, the barndoor skate has been recorded breeding year-round, with egg-laying highest in the autumn and lowest in the spring. One female was recorded to lay between 69 and 115 eggs per year (6). The eggs are laid in smooth, rectangular, yellowish or greenish capsules, around 16 centimetres in length and with short, stiff horns at each corner (3) (4) (6). The egg capsules are deposited in sandy or muddy flats (3) (4), and may hatch after around 11 to 16 months (6). The young barndoor skates average about 19 centimetres in length (3) (6), with males reaching maturity at an estimated 107 to 112 centimetres, and females at around 116 centimetres (1) (2) (5).
The diet of the barndoor skate consists mainly of bottom-dwelling species, including fish, squid, crustaceans, bivalves, worms and gastropods (1) (2) (3) (4), with larger individuals capable of taking larger and more active prey (3). This skate’s size means that, as an adult, large sharks are probably its only potential predators (3) (4).