The Australian ghostshark (Callorhinchus milii) is a cartilaginous fish (Chondrichthyes) belonging to the subclass Holocephali (chimaera).

It is found off southern Australia, including Tasmania, and south of East Cape and Kaipara Harbour in New Zealand, at depths of 0–200 m (0–656 ft).

[2] From spring to autumn, adults migrate inshore to estuaries and bays and females lay their eggs on sandy or muddy substrates.

[5] In New Zealand, Australian ghostsharks are exploited commercially, particularly during spring and summer when they migrate into shallow coastal waters.

They are also a popular target of recreational fishers in Westernport Bay, Victoria and in the inshore waters of south-east Tasmania.

In January 2014, Nature reported research into the Australian ghostshark genome[6] that showed they lack a single gene family that regulates the process of turning cartilage into bone, and indicates a gene duplication event gave rise to the transformation in bony vertebrates.