closeup on a gravid female japanese endangered riu-kiu sword-tailed newt, cynops ensicauda ensicauda

amphibian chordata caudata cynops ensicauda japan japanese riu kiu newt salamandridae urodela animal aquatic asian beautiful biology closeup ecology endangered endemic fire bellied firebelly firebellied green herpetology indoors macro natural orange outdoors pet predator red salamander single threatened underwater vertebrate wild wildlife zoology gravid female swordtailed