closeup on adult critically endangered neotenic anderson's salamander ,ambystoma anderson, endemic to zacapu lagoon

amphibia achoque ambystoma ambystomatidae amphibian anomaly chordata caudata ecology endangered iucn magnification mexican mexico nature status adult animal aquatic biology closeup gills herpetology macro neotenic neoteny newt outdoors paedomorph pattern predator salamander single underwater vertebrate wild wildlife