the critically endangered neotenic mexican achoque salamander , ambystoma andersoni only ocurs in zacapu lagoon , mexico

amphibia achoque ambystoma andersoni ambystomatidae amphibian anomaly chordata caudata ecology mexican mexico nature animal biology closeup critically endangered herpetology macro mole salamander neotenic newt outdoors paedomorph predator single tailed vertebrate wild wildlife red list zacapu lagoon aquatic underwater