closeup on a male japanese, subtropical endangered a riu-kiu sword tailed newt, cynops ensicauda ensicauda

amphibian chordata caudata cynops ensicauda japanese nature riu kiu newt salamandridae sword tailed urodela animal aquatic asian beautiful biology closeup ecology endangered endemic fire bellied firebelly firebellied freshwater green herpetology indoors macro male one orange outdoors pet predator red salamander single threatened underwater vertebrate wild wildlife zoology detailed subtropical riu-kiu