Common Sawshark

Overview

The common sawshark is a distinctive cartilaginous fish easily recognized by its elongated, flattened snout edged with sharp teeth and a pair of sensory barbels. Endemic to the waters of southern Australia, this species inhabits continental shelf and slope environments. It uses its specialized snout to locate and disable prey along the seafloor.

Distribution & habitat

This species is restricted to Australian marine waters, ranging from New South Wales around Tasmania to Western Australia. It typically frequents shelf and slope zones over sandy or muddy bottoms.

Appearance

Featuring a slender, elongated body, the common sawshark possesses a notably long, tapering rostrum lined with alternating large and small teeth. Midway along the underside of the snout, two fleshy barbels help detect prey. The upper body displays a mottled pattern of grey, brown, or yellowish tones, featuring darker spots and bands, while the underside is pale white. It has two dorsal fins, five gill slits on each side of the head, and lacks an anal fin.

Biology & behavior

This species reproduces via aplacental viviparity, with females typically giving birth to litters of live young following a year-long gestation period.

Feeding

Dietary habits primarily consist of small bottom-dwelling fishes and crustaceans. The saw-like rostrum and sensitive barbels are deployed to sweep through sediment, locate hidden organisms, and incapacitate them prior to consumption.