Goblin Fish – Glyptauchen panduratus.
Goblin Fish: Rarely seen, the Goblin Fish is one nasty customer. It is a close relation of the Stonefish and is very venomous. The fish has a row of 17 spines along its back, which are closely webbed. Get stung by one of these you may suffer shock and even collapse. Also known as the saddlehead.
They live in sand and mud in waters 3m to 50m deep. They grow to about 20cm and are found in Tas, SA, NSW and Southern WA and VIC.