closeup on a neotenic juvenile of the endangered japanese riu-kiu newt, cynops ensicauda ensicauda with gills

amphibia amphibian chordata caudata cynops ensicauda japan japanese nature newt salamandridae sword tailed urodela animal aquatic asian beautiful biology closeup ecology endangered endemic fire bellied firebelly firebellied freshwater herpetology macro natural orange outdoors pet predator red salamander single status threatened underwater vertebrate wild wildlife zoology neotenic juvenile riukiu gills