closeup on a nearly metamorphosed barred tiger salamander larvae, ambystoma mavortium

zoology wildlife wild vertebrate usa urodela tiger tailed sort sonora single salamander reproduction predator outdoors north newt nature mole metamorphosed mavortium macro lifestage larvae heterotriton herpetology green gray gills ecology detailed closeup chordata caudata captive breeding blotched biology barred arizona animal amphibian amphibia american ambystomatidae ambystoma aaaa aaa