The diet of the brown shyshark includes lobsters and small fish (2) (3) (4), and it may also feed on crabs, cuttlefish and worms (6). Like most other catsharks, it lays eggs (2) (3) (4) (7), which usually take the form of rectangular egg cases, often with long tendrils at the corners (7). Two eggs may be laid at a time (3). The male brown shyshark reaches sexual maturity at around 63 to 69 centimetres in length, and the female at 60 to 73 centimetres (2) (4).
The common name of this and other ‘shysharks’, also known as ‘shy-eyes’, comes from the peculiar habit of coiling the body up with the tail held over the eyes when the shark is caught (2) (3) (4) (7). This defensive behaviour may help deter predators from swallowing the shark (6).