For reference:
Until researchers actually took a closer look at these crocodile newts – and were surprised to discover that the seemingly widespread Spiny crocodile newt actually hid a whole series of similar-looking, yet clearly different species. The number of crocodile newts has virtually exploded in the last twenty years. By the end of 2022, the original Tylototriton asperrimus had already become 19 different species, clearly distinct not only genetically, but also in many morphological and biological details.
A couple of examples:
Ziegler's Crocodile Newt (North Vietnam)
Kweichow Crocodile Newt (China)