Axolotl
Ambystoma mexicanum
Quick answer
The axolotl is a salamander from Mexico that keeps its larval features for life, including feathery external gills, and lives permanently in water instead of moving onto land. It is famous for its extraordinary ability to regrow limbs, parts of organs, and even portions of its brain. Critically endangered in the wild, it survives mainly in captivity and labs. Axolotls can live 10 to 15 years.
Axolotl facts at a glance
| Scientific name | Ambystoma mexicanum |
|---|---|
| Diet | Carnivore (worms, insects, small fish) |
| Habitat | Freshwater lakes and canals of Mexico City |
| Lifespan | 10–15 years |
| Length | 15–30 cm (6–12 in) |
| Superpower | Regrows limbs, organs, and brain tissue |
| Conservation status | Critically Endangered (IUCN) |
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Amphibia |
| Order | Urodela |
| Family | Ambystomatidae |
| Genus | Ambystoma |
Neoteny: the salamander that stays young
Most salamanders transform from water-living larvae into land-living adults, but the axolotl keeps its juvenile form for life, a phenomenon called neoteny. It retains its feathery external gills and stays fully aquatic, breeding while still in what looks like a larval body.
Regeneration
The axolotl is one of the most studied animals in regenerative biology. It can regrow lost limbs, tail, parts of the heart and other organs, and even sections of its brain and spinal cord, often with little or no scarring. Scientists study it to understand how regeneration works and whether similar processes might help in human medicine.
Habitat and range
In the wild, axolotls live only in the remnants of the lake and canal system around Mexico City, especially Lake Xochimilco. This habitat has been drained, polluted, and invaded by non-native fish, leaving very few wild axolotls.
Conservation
The axolotl is Critically Endangered in the wild, with wild numbers reduced to a tiny fraction of their former range. Paradoxically, it is abundant in captivity as a pet and a lab animal. Restoring the canals of Xochimilco and reducing pollution are central to saving the wild population.
Frequently asked questions about the Axolotl
Is the axolotl a fish?
No. The axolotl is an amphibian, specifically a salamander. It looks fish-like because it keeps its larval form and external gills for life and lives permanently in water.
Can axolotls really regrow body parts?
Yes. Axolotls can regenerate lost limbs, tail, parts of organs, and even portions of the brain and spinal cord, often without scarring. This makes them important in scientific research.
Why do axolotls stay in their larval form?
Axolotls undergo neoteny, meaning they keep juvenile features such as external gills and remain aquatic for life rather than transforming into a land-dwelling adult.
Are axolotls endangered?
Yes. Axolotls are Critically Endangered in the wild, surviving in just a few canals near Mexico City, even though they are common as pets and lab animals.
What do axolotls eat?
Axolotls are carnivores that eat worms, insects, small crustaceans, and small fish, sucking prey into their mouths with a quick gulp.
How long do axolotls live?
Axolotls typically live 10 to 15 years in captivity with good care. Wild lifespans are harder to measure given how few remain.
