closeup on the colorful but endanegred riu kiu sword-tailed newt, cynops ensicauda popei, endemic to japan

amphibia amphibian black chordata caudata color cynops ensicauda popei ecology japan japanese nature pet riu kiu newt salamandridae sword tailed animal aquarium aquatic biology closeup colorful endangered endemic fire bellied firebelly green herpetology macro outdoors predator salamander single underwater vertebrate wild wildlife zoology