Axolotl
CR

Axolotl

Ambystoma mexicanum

Declining

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Axolotl

Overview

The axolotl is a species of mole salamander. It is neotenic, reaching sexual maturity without undergoing metamorphosis, and the adults remain fully aquatic with obvious external gills. Axolotls may be difficult to distinguish from the larval stage of other neotenic adult mole salamanders, in particular the tiger salamander, or other species such as mudpuppies.

The axolotl's decline is driven primarily by the degradation and shrinkage of its sole native habitat in Xochimilco's canal system, caused by urban water extraction, pollution from agricultural and residential runoff, and historic lake drainage in the Valley of Mexico. Introduced predatory and competitive fish species, particularly carp and tilapia, have significantly reduced survival rates of eggs and larvae in remaining wild habitat. Because the species exists as a single fragmented wild population rather than across a broad range, these localized pressures have an outsized impact on overall numbers.

Threat summary

Habitat

Axolotls inhabit the freshwater canal system and remnant wetlands of Xochimilco in southern Mexico City, preferring areas with abundant aquatic vegetation and soft substrates. They require cool, well-oxygenated water with temperatures between 14-20°C and are typically found at depths of 0.5-3 meters among the roots of floating gardens called chinampas.

Wetlands (inland)· major

Conservation measures underway

Site/area protectionSite/area managementHabitat & natural process restorationSpecies managementSpecies recoverySpecies reintroductionAwareness & communicationsLegislation

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Turbinicarpus horripilus

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Frequently asked questions

Why is Axolotl classified as Critically Endangered?
Axolotl is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. The axolotl's decline is driven primarily by the degradation and shrinkage of its sole native habitat in Xochimilco's canal system, caused by urban water extraction, pollution from agricultural and residential runoff, and historic lake drainage in the Valley of Mexico. Introduced predatory and competitive fish species, particularly carp and tilapia, have significantly reduced survival rates of eggs and larvae in remaining wild habitat. Because the species exists as a single fragmented wild population rather than across a broad range, these localized pressures have an outsized impact on overall numbers.
Where does Axolotl live?
Axolotl occurs in Mexico. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Axolotl?
The main threats to Axolotl are 1.1, 5.1, 5.1.1, and 7.2. The full IUCN-classified threat record for this species is detailed on the species page.

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