After decades working as a fisherman on a high-altitude Mexican lake, Froylan Correa is now helping to save an endangered amphibian with gills resembling a lion's mane and a remarkable regenerative ability. The achoque, also known as the Lake Patzcuaro salamander, is a lesser known relative of the axolotl, the small friendly- faced amphibian battling extinction in Mexico City. Overfishing, pollution and reduced water levels in Lake Patzcuaro, its only natural habitat, mean that the achoque is listed as critically endangered by the International Union for Conservation of Nature. In an attempt to prevent it disappearing, biologists from Michoacana University decided to pay the local Indigenous community of San Jeronimo Purenchecuaro to help the achoque to reproduce. IMAGES AND SOUNDBITES