Tiny salamander. There isn't much info out there in English on the kinds of salamanders in Korea. A site I found said that Korean salamanders take up to one or two years to mature to the point that they lose their external gills and leave the water. Ones in the exotic pet shops here that I have seen are much bigger and still have their feathery gills. This one has already lost them and has sort of molted a layer. Interesting. It now looks a bit different in both color and shape- it is darker and the head seems much more angular than before.