Axolotl Lifespan in Australia, How Long They Live

Axolotl lifespan is commonly quoted as 10 to 15 years, and a well kept animal in Australia should reach the upper end of that or beyond. Here is what the number really depends on, and what the whole life cycle looks like.

How long do axolotls live

The honest answer is ten to fifteen years for a captive axolotl kept properly, with fifteen to twenty achievable and occasionally exceeded. That is longer than most people expect and longer than many dogs, and it is the single most important thing to weigh up before buying one.

The variation is not random. Almost all of it comes down to water temperature and water quality over the animal's life. An axolotl held at 16 to 18 degrees in a cycled tank with clean water will very likely see fifteen years. The same animal held at 23 degrees through repeated Australian summers may not see five. Genetics play a part but husbandry plays a far larger one.

The axolotl life cycle

Egg, 0 to 3 weeks. Females lay a few hundred eggs, attached individually to plants or surfaces. They hatch in roughly two to three weeks depending on temperature, warmer water hatching them faster.

Larva, 0 to 5 cm. The hatchling has external gills and a tail but no legs at all. It feeds on live food only, moving prey, and needs feeding several times a day. Front legs appear within a few weeks, hind legs some weeks later.

Juvenile, 5 to 15 cm. All four limbs present, the animal now looks like a small adult, and it will take chopped worm and pellets. This is the stage animals are sold at, and it is the stage of fastest growth. Ours are listed from around 9 cm. See baby axolotls for what this stage needs.

Sub adult, 15 to 20 cm. Growth slows, colouring deepens and settles, and morph characteristics become fully apparent. This is when a copper reaches its real colour and a wild type develops its full gold flecking.

Adult, 12 to 18 months onward. Sexual maturity, typically 18 to 25 cm, occasionally to 30 cm. Feeding drops to every two or three days. From here the animal changes very little for the next decade or more.

Why they never grow up

An axolotl is a salamander that does not metamorphose. Most salamanders begin aquatic with gills and then transform into an air breathing land animal, losing the gills and developing lungs. The axolotl simply does not. It keeps its larval body plan, external gills and all, while becoming sexually mature. Biologists call this neoteny.

It is the reason an adult axolotl still looks like a larva, and the reason it must stay in water for its whole life. It also explains the regeneration. Larval tissue retains the capacity to rebuild itself, and because an axolotl never leaves that state, it never loses the ability.

Metamorphosis can be forced with hormones, and it occasionally happens spontaneously. It should never be induced deliberately. A metamorphosed axolotl is a land animal with a substantially shorter life expectancy.

What shortens the life, in order

Heat. The dominant factor in Australia. Sustained water above 22 degrees suppresses the immune system, appetite and eventually organ function. This is why we are so insistent about cooling on our Brisbane and Perth pages, and why the tank setup guide spends so long on it.

Chronic poor water quality. An animal living with low level ammonia or nitrite will not die this week, it will die years early. Test rather than assume.

Gravel impaction. Entirely preventable and frequently fatal. Fine sand or bare glass only.

Overfeeding. An adult fed daily becomes overweight, which shortens life the same way it does in any animal.

Inappropriate tank mates. Fish nip gills. Other axolotls of mismatched size cause injuries. Both create chronic stress.

Ageing in an axolotl

Axolotls age gracefully and it is difficult to guess the age of a healthy adult by looking at it. Older animals become slightly less active, regenerate more slowly, and can lose a little gill filament density. There is no dramatic decline the way there is in a mammal. An animal in its twelfth year often looks much as it did in its third.

Females that have bred repeatedly tend not to live as long as those that have not, which is one reason we do not breed our animals hard.

Planning for fifteen years

This is worth sitting with. Fifteen years covers a lot of life changes, moving house, moving state, changing circumstances. An axolotl is not difficult to move but it is not trivial either, and rehoming one is harder than rehoming a cat.

Budget for it as well. The animal costs $70 to $190 AUD from us, but fifteen years of electricity for a filter and a chiller, plus food and replacement equipment, adds up quietly. Our axolotl price Australia page covers the full cost picture, and are axolotls good pets is an honest read on whether the commitment suits your household.

Kept well, you get an animal that will be sitting in the same tank, looking essentially unchanged, when a lot else in your life has moved on. Most owners find that quite a good deal.

Set up and ready to go?

Every axolotl we sell is bred in our Victoria hatchery, photographed individually and sent with a care card and a live arrival guarantee.

Browse axolotls for sale Ask us a question

Axolotl Lifespan in Australia, How Long They Live questions

How long do axolotls live?

Ten to fifteen years is the usual range in captivity, and a well kept animal can pass fifteen. Records exist of animals beyond twenty. Wild lifespan is shorter and harder to measure because the wild population is critically endangered.

What shortens an axolotl's lifespan?

Sustained warm water above 22 degrees is the biggest factor by a wide margin, followed by chronic poor water quality, gravel impaction, and overfeeding. Almost every one of those is a husbandry problem rather than bad luck.

How fast do axolotls grow?

Very quickly at first. They hatch around 1 cm, reach 10 cm within a few months, and are usually 18 to 25 cm and sexually mature between twelve and eighteen months. Growth slows markedly after the first year.

Do axolotls really regenerate limbs?

Yes, and it is why they are studied so heavily in laboratories. An axolotl can regrow limbs, gills, parts of the tail and even sections of some organs, generally without scarring. Regeneration is slower in older animals.

Are axolotls endangered?

In the wild, critically. The species survives naturally only in the canal system at Xochimilco near Mexico City. The captive population, including every animal in Australia, is large and stable and completely separate from the wild one.