Axolotl Care Guide: Complete Beginner Guide to Keeping Axolotls Healthy

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Axolotls are one of the most fascinating aquatic pets in the world. Known for their feathery external gills, gentle expressions, unique colours, and amazing regenerative abilities, axolotls have become a favourite among freshwater aquarium keepers across Australia.

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Although they are sometimes called “Mexican walking fish,” axolotls are not fish at all. They are aquatic salamanders with very specific care needs.

At Little Lotl’s, we believe successful axolotl keeping starts with the right information, the right setup, and safe, stable water. This complete axolotl care guide is designed to help beginner and experienced keepers understand how to set up, feed, maintain, and care for an axolotl properly.

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Whether you are preparing for your first axolotl, upgrading your tank, or wanting to improve your current setup, this guide will walk you through the essentials.

 

What Is an Axolotl?

The axolotl’s scientific name is Ambystoma mexicanum.

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Axolotls are aquatic amphibians native to the Xochimilco lake system near Mexico City. Unlike many salamanders, axolotls usually remain fully aquatic for their entire lives.

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One of their most unusual features is neoteny, which means they retain juvenile characteristics into adulthood. This is why adult axolotls keep their external gills, aquatic lifestyle, and larval-like appearance.

 

Quick Axolotl Facts

Scientific name: Ambystoma mexicanum

Common name: Axolotl

Nickname: Mexican walking fish

Animal type: Aquatic salamander

Origin: Xochimilco, Mexico

Average adult size: 20–30 cm

Average lifespan: 10–15 years with good care, sometimes longer

Diet: Carnivorous

Lifestyle: Fully aquatic

Care level: Beginner-friendly only when the keeper is properly prepared

Axolotls are gentle, unusual, and rewarding pets, but they are not “just add water” animals. Their health depends heavily on clean water, cool temperatures, safe tank design, and regular maintenance.

 

Setting Up the Ideal Axolotl Tank

A safe axolotl tank should be designed around the needs of the animal first.

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Axolotls spend most of their time walking along the bottom of the tank, resting in hides, exploring slowly, and waiting for food with the patience of a tiny underwater goblin.

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They need floor space, stable water, gentle flow, safe surfaces, and places to hide.

 

Axolotl Tank Size

For one adult axolotl, Little Lotl’s recommends a minimum tank size of approximately:

120 litres or larger (30Gallon)

Larger is always better, especially for adult axolotls or multiple axolotls.

Long tanks are preferred over tall tanks because axolotls use horizontal floor space more than vertical swimming space.

 

A good axolotl tank should allow room for:

• Hides

• Plants

• Feeding space

• Gentle filtration

• Easy cleaning

• Comfortable movement

 

If keeping more than one axolotl, provide extra space and ensure they are a similar size to reduce the risk of accidental bites or bullying.

 

Ideal Water Parameters for Axolotls

Water quality is the most important part of axolotl care.

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Clear water is not always safe water. You must test the water regularly.

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Little Lotl’s recommended axolotl water parameters are:

Temperature: 14°C to 18°C (57°F to 64°F)
64FpH: 7.2 to 8.2
Ammonia: 0 ppm
Nitrite: 0 ppm
Nitrate: Less than 20 ppm
GH: 7 to 14 dGH
KH: 4 to 8 dKH

 

These parameters support healthy gills, good appetite, stable water chemistry, and long-term wellbeing.

 

Temperature for Axolotls

Axolotls are cold-water animals.

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The ideal water temperature is:

14°C to 18°C (57°F to 64°F)

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Temperatures above 20°C can cause stress and increase the risk of illness. Heat stress is one of the biggest concerns for Australian axolotl keepers, especially during summer.

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To help keep axolotl water cool:

• Keep the tank out of direct sunlight

• Avoid placing the tank near windows

• Use aquarium fans if needed

• Consider a chiller in warmer homes

• Monitor temperature daily

• Keep lighting low

• Avoid sudden temperature swings

 

Cool, stable water is one of the secret ingredients for a happy lotl.

 

Tank Cycling and Filtration

Before adding an axolotl, the tank must be fully cycled.

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A cycled tank contains beneficial bacteria that process toxic waste.

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The aquarium nitrogen cycle works like this:

1. Axolotl waste and uneaten food create ammonia.

2. Beneficial bacteria convert ammonia into nitrite.

3. More beneficial bacteria convert nitrite into nitrate.

4. Nitrate is controlled through water changes, live plants, and maintenance.

 

A safe cycled tank should show:

Ammonia: 0 ppm
Nitrite: 0 ppm
Nitrate: Present but less than 20 ppm

Axolotls should not be placed into an uncycled tank unless you are safely tubbing them and cycling the tank separately.

 

Choosing the Right Filter

Axolotls need strong biological filtration, but they do not like strong water flow.

 

A good axolotl filter should:

• Provide plenty of biological filtration

• Keep ammonia and nitrite at 0 ppm

• Avoid strong current

• Be safe for delicate gills

• Run continuously

• Hold suitable filter media

 

Suitable filter options may include:

• Sponge filters

• Canister filters with softened flow

• Internal filters with gentle flow

• Spray bars directed toward glass to reduce current

 

Strong water movement can stress axolotls, so the goal is clean water without turning the tank into a tiny aquatic treadmill.

Never rinse biological filter media under untreated tap water, as chlorine and chloramine can kill beneficial bacteria.

 

Safe Substrate for Axolotl Tanks

Substrate safety is extremely important.

Axolotls feed by suction. If small stones, gravel, or loose unsafe substrate are near food, they can accidentally swallow them.

Unsafe substrate can cause impaction, injury, or serious health issues.

 

Safer options include:

• Bare-bottom tanks

• Fine aquarium-safe sand for suitable sized axolotls

• Large smooth rocks bigger than the axolotl’s head

• Potted plants

• Plants attached to décor

 

Avoid:

• Small gravel

• Small pebbles

• Sharp rocks

• Coarse substrate

• Aquasoil in standard axolotl tanks

• Any substrate small enough to swallow

 

Bare-bottom tanks are especially useful for juveniles, rescues, quarantine setups, and easy cleaning.

 

Hides, Plants and Tank Décor

Axolotls need places to hide and rest.

 

A good tank should include:

• At least one hide per axolotl

• Smooth aquarium-safe décor

• Shaded areas

• Resting places

• Safe plants

• Open floor space

 

Axolotls have delicate skin, so avoid anything sharp, rough, or unstable.

 

Good plant options for axolotl tanks include:

• Java fern

• Anubias

• Elodea

• Foxtail

• Hornwort

• Java moss

• Vallisneria

• Amazon sword

• Subwassertang

• Floating plants

 

Live plants can help provide cover, reduce stress, soften lighting, and support water quality by using some nitrate.

 

Lighting for Axolotls

Axolotls do not need bright aquarium lighting.

 

They do not have eyelids and often prefer dimmer environments.

 

If using aquarium lights for live plants:

• Keep lighting low

• Provide shaded areas

• Use floating plants

• Add hides

• Avoid long, bright light periods

 

A softly lit tank is usually more comfortable for axolotls than a bright display tank.

 

What Do Axolotls Eat?

Axolotls are carnivores and need animal-based foods.

 

Good staple foods include:

• Earthworms

• Nightcrawlers

• Quality axolotl pellets

• Blackworms for smaller axolotls

• Suitable live or frozen foods when appropriate

 

Earthworms are one of the best staple foods for many juvenile and adult axolotls because they are nutritious and easy to digest.

 

Feeding Frequency

Feeding frequency depends on age and size.

 

General guide:

Juvenile axolotls: usually fed daily or more often depending on age and size
Adult axolotls: usually fed 2–3 times per week

Always adjust feeding based on the axolotl’s condition, appetite, age, growth, and body shape.

A healthy axolotl should have a well-proportioned body, not overly thin and not excessively round.

 

Foods to Avoid

Avoid feeding:

• Wild-caught insects

• Wild-caught worms from unsafe areas

• Red meat

• Chicken

• Processed human food

• Foods too large to swallow safely

• Unquarantined feeder fish

• Unsafe live foods from unknown sources

 

Feeder fish can carry parasites, disease, or cause injury, and they are not necessary for a healthy axolotl diet.

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If live feeder animals are used at all, they should be properly quarantined and sourced carefully. For most keepers, safer staple foods such as earthworms and quality pellets are a better choice.

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Remove uneaten food promptly to protect water quality.

 

Signs of a Healthy Axolotl

A healthy axolotl usually shows:

• Fluffy, well-developed gills

• Clear eyes

• Smooth skin

• Good appetite

• Relaxed posture

• Straight tail

• Normal swimming and walking

• Healthy body shape

• Interest in food

• Stable behaviour

 

Every axolotl has its own personality. Some are bold little food detectives, while others prefer a quieter, hide-loving lifestyle.

The key is knowing what is normal for your axolotl.

 

Common Axolotl Health Problems

Many axolotl health issues are linked to water quality, temperature, stress, or unsafe tank setup.

Common problems include:

 

Ammonia or Nitrite Stress

Ammonia and nitrite should always be 0 ppm.

 

Signs of water quality stress may include:

• Curled gills

• Forward-facing gills

• Loss of appetite

• Lethargy

• Floating

• Red or irritated skin

• Unusual behaviour

 

If ammonia or nitrite is present, test water, perform appropriate water changes, check filtration, and tub your axolotl if the tank is unsafe.

 

Fungal Infections

Fungal infections may appear as white, cotton-like growths on the gills, skin, or wounds.

Good water quality, cool temperatures, and low stress help reduce risk.

If fungus spreads, returns, or appears severe, seek advice from an experienced exotic vet.

 

Impaction

Impaction can occur when an axolotl swallows gravel, unsafe substrate, or food that is too large.

 

Signs may include:

• Loss of appetite

• Bloating

• Difficulty passing waste

• Floating

• Lethargy

 

Prevention is best. Use safe substrate and correctly sized food.

 

Heat Stress

High temperatures can quickly stress axolotls.

 

Signs may include:

• Loss of appetite

• Restlessness

• Lethargy

• Curled gills

• Increased surface gulping

• Poor gill condition

 

Keep water cool and monitor temperature daily.

 

When to Contact an Exotic Vet

Contact an experienced exotic or amphibian vet if your axolotl shows:

• Severe wounds

• Rapid decline

• Persistent floating

• Extreme weight loss

• Severe fungus

• Refusal to eat for an extended period

• Red, inflamed skin

• Swelling or bloating

• Signs of pain or distress

• No improvement after water quality has been corrected

 

Avoid using random medications without proper guidance. Axolotls are amphibians with sensitive skin and gills, so the wrong treatment can be dangerous.

 

Handling Axolotls

Axolotls should not be handled unless necessary.

 

Their skin is delicate and protected by a slime coat.

 

If you must move an axolotl:

• Use a clean container where possible

• Keep the axolotl submerged

• Avoid dry hands

• Never lift by legs, tail, or gills

• Support the whole body

• Move slowly and calmly

 

Axolotls are best enjoyed as display pets.

They are for watching, feeding, and admiring, not cuddling.

 

Can Axolotls Live Together?

Axolotls do not need companions.

 

They are perfectly happy living alone.

 

Some axolotls can be kept together if:

• They are similar in size

• They have enough space

• They are the same sex if avoiding breeding

• There are multiple hides

• Feeding is monitored

• There is no aggression or repeated biting

 

Young axolotls can accidentally bite each other, especially during feeding.

 

Males and females should be separated unless breeding is intentional, as repeated breeding can place stress on females.

 

Can Axolotls Live With Fish?

In most cases, fish are not recommended as tank mates for axolotls.

 

Fish may:

• Nip axolotl gills

• Carry disease or parasites

• Compete for food

• Be eaten

• Stress the axolotl

 

Some keepers use certain livebearers or shrimp as feeder animals, but this comes with risk and should only be done with proper quarantine and understanding.

 

For most axolotl tanks, the safest choice is an axolotl-only setup.

 

Breeding Axolotls

Axolotls can reach sexual maturity around 12–18 months, but maturity varies by size, genetics, temperature, and individual development.

 

Breeding should not be taken lightly.

 

Axolotls can produce hundreds of eggs, and raising babies requires:

• Separate containers

• Live foods

• Frequent feeding

• Daily cleaning

• Size sorting

• Careful monitoring

• Time, space, and commitment

• Plans for rehoming juveniles responsibly

 

Do not keep males and females together unless you are prepared for breeding.

 

Baby axolotls are wonderful, but they are also tiny chaos noodles with enormous appetites.

 

Enrichment for Axolotls

Axolotls do not need toys like mammals, but they benefit from a comfortable and interesting environment.

 

Good enrichment includes:

• Safe hides

• Plants

• Resting areas

• Gentle layout changes

• Different textures from safe décor

• Low-stress feeding routines

• Shaded areas

• Clean open floor space

Keep changes gentle. Axolotls prefer stability over dramatic tank makeovers.

 

Axolotl Tank Maintenance

Regular maintenance keeps your axolotl healthy.

 

Daily tasks:

• Check temperature

• Observe behaviour

• Remove uneaten food

• Check for waste

• Make sure equipment is running

 

Weekly tasks:

• Test water parameters

• Perform partial water changes as needed

• Siphon waste

• Check filter flow

• Inspect hides and décor

• Review appetite and body condition

 

Monthly tasks:

• Check filter media

• Rinse media only in old tank water if needed

• Review water parameter trends

• Check equipment condition

 

Never clean everything at once. Overcleaning can remove beneficial bacteria and disrupt the cycle.

 

Axolotl Care FAQs

 

Are axolotls good beginner pets?

Axolotls can be suitable for beginners who are prepared to learn about cycling, water testing, temperature control, and proper tank setup.

They are not low-maintenance pets.

 

Is tap water safe for axolotls?

Tap water may be used only if it is properly treated with water conditioner and tests within safe parameters.

Always dechlorinate tap water before use.

 

How long do axolotls live?

With good care, axolotls can live around 10–15 years, sometimes longer.

 

Do axolotls need a heater?

No. Axolotls are cold-water animals and usually need cooling rather than heating.

 

Can I hold my axolotl?

Only when necessary. Avoid regular handling.

 

Do axolotls need friends?

No. Axolotls do not require companions and often do well alone.

 

What size tank does one axolotl need?

A single adult axolotl should have approximately 120 litres or larger, with more space always preferred.

 

What is the best food for axolotls?

Earthworms are one of the best staple foods for many axolotls. Quality axolotl pellets can also be used as part of a balanced diet.

 

Final Thoughts

Axolotls are fascinating aquatic amphibians with unique care needs.

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They can be rewarding pets for keepers who are willing to provide cool water, stable parameters, safe food, suitable filtration, and regular maintenance.

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The foundations of good axolotl care are simple:

Clean water.

Cool temperatures.

A cycled tank.

Safe substrate.

Proper food.

Regular testing.

Low stress.

 

When those basics are in place, your axolotl has the best chance to thrive for many years.

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At Little Lotl’s, we are here to help Australian axolotl keepers build safe, healthy, and happy aquatic homes, one test tube, worm, and water change at a time.

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