Axolotl

Ambystoma mexicanum · Amphibian, Vertebrate, Cold-blooded, Wild

Axolotl

Animal Family

Family Ambystomatidae, Order Urodela, Class Amphibia

Animal Category

Endangered Species

Breed / Variety

Wild type morph (dark gray/brown with greenish undertones)

Conservation Status

Critically Endangered according to the IUCN Red List, with a rapidly decreasing population trend due to urban encroachment, water pollution, and the introduction of invasive predatory fish.

About This Creature

An unusual aquatic salamander reaching lengths of 15 to 45 centimeters and weighing 60 to 230 grams. Features a wide head, dark grey-brown skin with speckled markings, lidless eyes, and prominent feathery external gills.

Physical Characteristics

Flattened broad head, small eyes without lids, wide mouth giving a smiling appearance, four undeveloped digits on front limbs and five on hind limbs, long laterally compressed tail fin, and three pairs of feathery external gills fringed with dark filaments.

Behavior & Temperament

Solitary and sedentary creatures, largely nocturnal or crepuscular. They use suction to capture prey and rely on neoteny, remaining in their aquatic larval form throughout their lives rather than undergoing metamorphosis on land.

Habitat & Diet

Origin Region

Endemic to the Valley of Mexico, specifically Lake Xochimilco and Lake Chalco

Habitat

Freshwater lakes, canals, and high-altitude wetlands. Fully aquatic.

Diet & Nutrition

Carnivorous. Diet consists of worms, insect larvae, small crustaceans, mollusks, and small fish. They hunt by suction, locating prey primarily through smell and movement.

Lifespan & Health

Typically lives 10 to 15 years in captivity. Prone to fungal infections, water quality issues, and stress from improper tank conditions. They possess remarkable regenerative capabilities, able to regrow limbs, spinal cord, heart tissue, and parts of the brain.

Special Characteristics

Famous for neoteny (retaining juvenile traits into adulthood) and extraordinary regenerative healing abilities. Highly valued in scientific research regarding organ regeneration and embryology.

Ecological Information

Acts as an apex predator in its restricted native aquatic micro-ecosystem, regulating invertebrate and small fish populations. Serves as a bioindicator for freshwater ecosystem health.

Identified on 9/25/2026