Home › Amphibia › Ambystomatidae › Axolotl (Ambystoma mexicanum)

SPECIES PROFILE

Axolotl (Ambystoma mexicanum)

Ambystoma

IUCN STATUS

Critically Endangered

Axolotl (Ambystoma mexicanum) — Endemic to the lake system of the Valley of Mexico (Xochimilco); extinct in the wild from all other former lake habitats

CONSERVATION STATUS

Critically Endangered

CLASS

Amphibia

GEOGRAPHICAL RANGE

Endemic to the lake system of the Valley of Mexico (Xochimilco); extinct in the wild from all other former lake habitats

DIET

Carnivore

HABITAT

Freshwater lake system; historically Lakes Xochimilco and Chalco in the Valley of Mexico; now restricted to a tiny area of Xochimilco canals

🔬 Classification

PHYLUM

Chordata

CLASS

Amphibia

ORDER

Caudata

FAMILY

Ambystomatidae

GENUS

Ambystoma

📋 Description

SIZE

15–30 cm total length; 60–150 g

COLORATION

Dark brown to black with lighter mottling in wild individuals; large external feathery gills (three pairs); broad flat head; lidless eyes; long tail fin

ADAPTATIONS

Retains juvenile (larval) body form throughout its adult life — a condition called neoteny; remarkable regenerative ability including complete limb, heart, and partial brain regeneration

🌿 Ecology

HABITAT

Freshwater lake system; historically Lakes Xochimilco and Chalco in the Valley of Mexico; now restricted to a tiny area of Xochimilco canals

DIET

Carnivore

GEOGRAPHIC RANGE

Endemic to the lake system of the Valley of Mexico (Xochimilco); extinct in the wild from all other former lake habitats

REPRODUCTION

Lays 100–300 eggs attached to aquatic vegetation; no parental care; hatching after 2 weeks; juveniles remain neotenic unless exposed to thyroid hormone

DIET DETAILS

Small fish, worms, insect larvae, crustaceans, and molluscs snapped with a quick inhalation of water

⚠️ Threats & Conservation

PRIMARY THREATS

Water pollution and urbanisation of the Valley of Mexico draining lake habitat; invasive fish (tilapia and carp) predating eggs and young; water extraction

💡 Interesting Facts

1

The Axolotl can regenerate entire limbs, portions of the heart and brain, and the spinal cord without scarring — capabilities that make it one of the most studied animals in regenerative medicine.

2

The name "axolotl" comes from Nahuatl and means "water monster" or "water twin"; it was sacred to the Aztec god Xolotl and was a source of food in pre-colonial Mexico.

🔭 Sighting Guide

📍 BEST PLACES TO SIGHT

Xochimilco Ecological Park in Mexico City is the last wild habitat of the Axolotl and the only place it can be seen outside captivity

Ejido de San Gregorio Atlapulco canals in Xochimilco, Mexico City, are monitored for wild Axolotl populations

Universidad Nacional Autónoma de México (UNAM) campus lake system in Mexico City has a captive conservation population

🗓️ BEST TIME TO SIGHT

Year-round in Xochimilco ecological park canals; guided night boat tours from the chinampas landing offer the best chance of seeing wild axolotls.

🎯 SIGHTING TIPS

Year-round in remaining canals of Xochimilco, Mexico City; chinampas (floating gardens) boat tours are the only accessible way to see wild individuals.