Spotted paddle-tail newt
"Pachytriton" species are stout-bodied, smooth-skinned aquatic newts. Their heads are large and flattened, and they have conspicuous labial folds and short, stubby legs and toes. They breathe through both lungs and skin. 
"P. brevipes" ranges from 5.5 to 7.5 in as an adult. It has prominent labial folds, long digits, and smooth skin, which differs from the tuberculate skin typical of newts.
Smooth newt
Researchers cannot yet say how widely the species will spread because this is the first newt species found in the wild in Australia. However, smooth newts are prolific breeders and can survive in a wide range of terrestrial and aquatic habitats. Based on where they live in Europe – fields, woodlands, and a range of disturbed habitats, scientists suspect that they're capable of surviving in many areas of southern Australia. Furthermore, the climate of south-eastern Australia resembles the species’ native range, and climate matching suggests that large parts of NSW, Victoria, eastern Tasmania, southern South Australia, and south-western Western Australia are suitable for newt habitation.