Ambystoma andersoni

Anderson's Salamander (Ambystoma andersoni)

Anderson's salamander, scientifically known as Ambystoma andersoni, is a fascinating neotenic salamander endemic to Zacapu Lagoon in the Mexican state of Michoacán. This species is remarkable for its ability to retain larval characteristics throughout its adult life, a trait shared by other neotenic Ambystoma species. It was first described by Branden and Krebs in 1984 and named in honor of herpetologist James Anderson.

Physical Characteristics and Habitat

The mature Anderson's salamander is easily identified by its medium-sized external gills, which feature bright red filaments, and a noticeable caudal fin. It possesses a large head and relatively small limbs, features that also characterize its larval stage. The salamander's coloration is distinctive, with black blotches scattered across a red-brown base. Ambystoma andersoni is entirely aquatic, spending its entire existence within the confines of its freshwater habitat. Zacapu Lagoon, where it resides, is a small lake situated at an altitude of 2000 meters within Mexico's Mesa Central region, an area known for its diverse Ambystoma species.

Conservation Status

Regrettably, Anderson's salamander faces significant threats and is listed as critically endangered on the IUCN Red List. This designation reflects a very high risk of extinction in the wild. The species' limited geographic range and dependence on a single body of water make it particularly vulnerable to environmental changes and habitat degradation.