Tylototriton andersoni Boulenger, 1892 Anderson's crocodile newt, Anderson's newt, Ryukyu spiny newt, or Japanese warty newt (Echinotriton andersoni) is a species of salamander in the family Salamandridae found in the Ryukyu Islands of Japan, and, at least formerly, Mount Guanyin in northern Taiwan, where it is now believed to be extinct.

[1][2][3] Echinotriton andersoni is a stout, flat salamander.

Colouration is uniformly dark brown or black, only the underside of the tail, cloacal region, and the soles of the feet are yellow-orange.

It breeds in standing water such as ponds and temporary pools;[1] outside breeding season it is difficult to observe as adult salamanders live in leaf litter, in rocky crevices, and under rocks and logs.

[3] Echinotriton andersoni is uncommon, and it is threatened by habitat loss and by collection for illegal pet trade.