What temperature does an axolotl need?

Cool water of about 60-68 F (16-20 C). Short swings to 55-72 F are tolerated, but long periods above about 74 F cause heat stress, which is often fatal.

What do axolotls eat?

Earthworms and sinking carnivore pellets as the staple, with frozen bloodworms or brine shrimp as treats. Avoid feeder goldfish.

How often should I feed an axolotl?

Juveniles once a day, adults every 2-3 days. Remove leftovers so they do not foul the water.

How long do axolotls live?

Usually 10-15 years in captivity with good care, and some live longer.

Can axolotls live with fish?

It is not recommended. Axolotls eat anything that fits in their mouth, and fish can nip their feathery gills. Keep them alone or with axolotls of similar size.

Do axolotls need a heater?

Usually no. The problem in most homes is too much heat, not too little, so plan for cooling in summer instead.

Axolotl Care: Water Temperature, Food and Daily Routine

Published: 2026-10-31 · FishyKart Blog

Axolotl care comes down to one rule: keep the water cool and clean. Axolotls (Ambystoma mexicanum) do best at 60-68 F (16-20 C), need about 20 gallons per adult, eat worms and sinking pellets, and live 10-15 years when their water stays stable. Heat, gravel and poor water quality cause most deaths. This guide covers the daily routine; the equipment side is in our axolotl tank setup guide.

Dark wild-type axolotl resting among long aquarium plants

Photo: Vassil - Wikimedia Commons, CC0

Axolotl Quick Facts

Parameter	Value
Adult size	about 8-12 in (20-30 cm)
Lifespan in captivity	10-15+ years
Water temperature	60-68 F (16-20 C) ideal; avoid long periods above 74 F
pH	about 6.5-7.5
Ammonia / nitrite / nitrate	0 / 0 / under 40 ppm
Tank	20-40 gallon long per adult
Diet	carnivore: worms, sinking pellets
Feeding	juveniles daily, adults every 2-3 days

Care figures follow a veterinary axolotl care sheet (Yarmouth Veterinary Center); size and wild data from the San Diego Zoo Wildlife Alliance Library fact sheet.

What Makes the Axolotl Different

The axolotl is a salamander that never leaves the water. It keeps its larval features for life, including the feathery external gills on each side of the head; biologists call this neoteny. It is also famous for regrowing lost limbs, tail and even parts of organs, which is why it has been studied in labs for decades.

In the wild, the axolotl survives only in a few canals and lakes of southern Mexico City around Xochimilco. The IUCN lists it as Critically Endangered (2019 assessment), with roughly 50-1,000 adults estimated in the wild. Every axolotl sold as a pet is captive bred.

Water Temperature: The Number That Matters Most

Axolotls are cold-water animals. Keep the tank at 60-68 F (16-20 C). Short dips to 55 F or rises to 72 F are tolerated, but weeks above about 74 F (23 C) lead to heat stress, loss of appetite and infections.

Put a thermometer in the tank and read it every day.
Keep the tank away from windows, heaters and direct sun.
Most homes need cooling in summer, not heating in winter: a clip-on fan or an aquarium chiller is the usual answer.

If your room regularly sits above the mid 70s F in summer, solve cooling before you buy the animal.

Water Quality

Axolotls produce a lot of waste for their size, and their skin and gills are sensitive. The tank must be fully cycled before the axolotl arrives; see how to cycle a fish tank.

Test weekly: ammonia 0, nitrite 0, nitrate under 40 ppm, pH around 6.5-7.5.
Change 20-30% of the water weekly with dechlorinated water at the same temperature.
Remove waste daily with a turkey baster or a small siphon.
Keep the current gentle: strong flow stresses axolotls and bends their gills forward.

What to Feed an Axolotl

Axolotls are carnivores that hunt by smell and suck food in. Good staples:

Earthworms (pesticide-free, chopped for juveniles): the best single food.
Sinking carnivore pellets made for axolotls or carnivorous aquatic animals.
Frozen bloodworms and brine shrimp as treats, more useful for juveniles than adults.

Feed juveniles daily and adults every 2-3 days, as much as they eat in a few minutes. Use tongs or a feeding dish so food does not mix with sand, and remove leftovers. Avoid feeder goldfish: they carry thiaminase and can bring disease.

Pale pink leucistic axolotl with red feathery gills seen from the front

Photo: Henry Mühlpfordt - Wikimedia Commons, CC BY-SA 3.0

Daily and Weekly Routine

Daily: check temperature, look at gills and skin, remove waste and leftovers.
Every 2-3 days (adults): feed.
Weekly: test water, change 20-30%, rinse the sponge filter in removed tank water.
Yearly: a check-up with a vet who treats amphibians.

Warning Signs

Call an amphibian vet if you see any of these for more than a day or two:

Gills curled forward or a curled tail tip (stress, often heat or water quality).
Floating and struggling to get back down.
White fuzzy patches on skin or gills (fungal infection).
Red skin or shrinking gills (poor water quality).
Refusing food together with lethargy.

The first step is almost always the same: check temperature and test the water.

Handling and Tank Mates

Do not handle axolotls for fun. Their skin is delicate and their bones are partly cartilage. To move one, use a soft net or a container and support the whole body.

Keep axolotls alone or with other axolotls of the same size. They eat fish, shrimp and snails that fit in their mouth, and fish such as barbs or tetras pick at the gills. Larger axolotls can also bite smaller ones.

Before You Buy: Is an Axolotl Legal Where You Live?

A few US states restrict axolotls, and since January 2025 federal law limits shipping them to Hawaii, Washington DC, Puerto Rico and US territories. Check our axolotl legal states guide before buying. Never release an axolotl outdoors.