Anderson’s Salamander (Ambystoma andersoni)
Also known as the Achoque, Anderson’s salamander is a species of mole salamander endemic to Lake Zacapu in the state of Michoacan in Mexico. Anderson’s salamander exhibits neoteny (the retention of juvenile traits) and as such it keeps its external gills and caudal fin throughout its life. Because it keeps its gills Anderson’s salamander is totally aquatic and lives its entire live in the water. Currently Anderson’s salamander is listed as critically endangered, this is thought to be a combination of its limited habitat and pollution.