What do axolotls eat?
The short answer
Axolotls are carnivores, and earthworms are the staple diet for adults. European nightcrawlers are the most widely recommended feeder: high in protein, soft-bodied, correctly sized and farm-raised. Feeder fish are actively discouraged because they introduce parasites and thiaminase, an enzyme that destroys vitamin B1.
Feeding schedule by age
| Life stage | Diet balance | How often | Notes |
|---|---|---|---|
| Hatchling, under 2 in | Live micro-foods | Daily | Brine shrimp, daphnia, micro-worms |
| Juvenile, 2-6 in | Chopped worms, small feeders | Daily | Growing rapidly |
| Sub-adult, 6-9 in | Worms | Daily to every other day | Transitioning to adult feeders |
| Adult, 9 in+ | European nightcrawlers | 1-3 worms every 1-3 days | Judge by body condition |
What to feed
| Food | Role | Why |
|---|---|---|
| European nightcrawlers (Dendrobaena) | Staple | Best overall nutrition; farm-raised |
| Earthworms (clean source) | Staple | The long-standing recommended staple |
| Axolotl / sinking carnivore pellets | Regular | Convenient; check ingredients |
| Blackworms | Juvenile staple | Good for smaller animals |
| Daphnia, brine shrimp | Hatchling | Live micro-foods for the smallest animals |
| Frozen bloodworms | Occasional | Fine as variety, weak as a staple |
What never to feed
Items in this table are either outright toxic or cause predictable long-term harm. This is the part of the page worth reading twice.
| Do not feed | Why |
|---|---|
| Goldfish and rosy red minnows | Thiaminase destroys vitamin B1. Cumulative neurological damage. |
| Feeder fish generally | Parasites, fungal spores and bacterial infection risk. |
| Wild-caught worms from treated ground | Pesticide and parasite risk. |
| Anything requiring warm water | Axolotls are cold-water animals; warmth is the core husbandry risk. |
| Gravel small enough to swallow | Impaction risk during feeding strikes. |
| Feeder insects with hard shells | Poorly digested by an aquatic amphibian. |
Where good sources disagree
Care sheets do not all say the same thing, and pretending otherwise helps nobody. These are the real points of difference between the sources cited at the foot of this page, and what we think the safe reading is.
Whether feeder fish are ever acceptable.
Some sources permit safe species as an occasional treat, perhaps once every week or two. Others recommend skipping live fish entirely on parasite grounds. The two camps agree on the specifics that matter: goldfish and rosy red minnows are unsafe because of thiaminase, and no source treats fish as a staple food for this animal.
How often adults should be fed.
Guidance ranges from one to three worms daily to the same amount every two to three days. The range is genuine because intake depends heavily on water temperature and on the individual animal's size. Body condition is the reliable guide: a healthy axolotl is filled out but not visibly swollen behind the head.
What most axolotl feeding advice gets wrong
The feeder fish sold for axolotls are the ones most likely to harm them.
Goldfish and rosy red minnows are cheap, widely stocked and specifically unsafe. Both contain thiaminase, an enzyme that breaks down vitamin B1, and the effect is cumulative rather than immediate, so the damage appears long after the feeding habit is established. This is the same reason those two fish are unsuitable for turtles.
Refusing food is usually a temperature problem.
Axolotls are cold-water animals and their appetite tracks water temperature closely. A tank drifting warm suppresses feeding and, past a point, causes real physiological stress. Before troubleshooting the diet, check the water; the food is rarely the issue when a previously healthy axolotl stops eating.
Earthworms look unglamorous and are the correct answer.
Keepers often want a tidier staple such as pellets or frozen bloodworms. Those are acceptable supplements, but the long-standing recommendation across keeping communities and care resources is worms, because the nutritional profile suits the animal. Use a farm-raised source rather than digging up the garden.
Common questions
What do axolotls eat?
Axolotls are carnivores. Earthworms, particularly European nightcrawlers, are the staple diet for adults, supplemented with sinking carnivore pellets and occasional frozen foods. Juveniles take blackworms and chopped worms, and hatchlings need live micro-foods such as newly hatched brine shrimp and daphnia.
Can axolotls eat feeder fish?
They should not be a staple, and goldfish and rosy red minnows should be avoided entirely. Those fish contain thiaminase, an enzyme that destroys vitamin B1 and causes cumulative neurological damage. Feeder fish also carry parasites and bacterial infections that can spread through a tank quickly.
How often should I feed my axolotl?
Adults of around nine inches or more typically take one to three European nightcrawlers every one to three days. Juveniles eat daily while growing, and hatchlings need live micro-foods daily. Intake varies with water temperature, so judge by body condition rather than a fixed schedule.
Why is my axolotl not eating?
The most common cause is water temperature. Axolotls are cold-water animals, and a tank that has drifted warm suppresses appetite and causes physiological stress. Water quality problems, recent handling and illness are other causes. Check temperature and parameters before changing the food.
Can axolotls eat bloodworms?
Frozen bloodworms are fine as occasional variety, particularly for smaller animals, but they are a weak staple because the nutritional profile is thin compared with earthworms. Use them to add variety rather than as the main diet, and keep earthworms or a quality carnivore pellet as the base.
Are earthworms from the garden safe for axolotls?
Only if you are certain the ground is free of pesticides, fertiliser and other chemicals, and even then there is a parasite risk. Farm-raised European nightcrawlers are the standard recommendation precisely because they remove both problems, and they are inexpensive and widely available.