closeup of a grey axolotl, mexican walking fish, tropical underwater amphibian from mexico, critically endangered animal specie

adult ambystoma ambystomatidae amphibian amphibians amphibious animal animals aquaculture aquarium aquatic axolomeh axolotl axolotls brown chalco closeup critical critically endangered exotic female fish fishes gray grey juvenile lake life male marine mature mexican mexicanum mexico mole neotenic pet pets plural popular salamander specie species threatened tropical underwater walking water