closeup on a dark and rare japanese endemic ishizuchi streamside

amphibia amphibian asia asian salamander asiatic black chordata caudata ecology hynobidae hynobius hirosei ishizuchi japan japanese nature urodela animal biology close up close-up closeup detailed endangered endemic herpetofauna herpetology macro natural newt one outdoors predator rare single slimy speckled subadult streamside streamtype tailed vertebrate wild wildlife zoology