What Do Axolotls Eat? Safe Foods by Age and Mistakes to Avoid
Axolotls are carnivores. Larvae eat tiny live foods such as daphnia and newly hatched brine shrimp. Juveniles move to worms and small pellets. Adults eat earthworms, bloodworms, blackworms, brine shrimp and pellets, according to the Royal Veterinary College. Offer only what each animal can eat in 2 to 3 minutes, and avoid gravel in the tank.
Feeding an axolotl is simple once you know the stage it is in. A hatchling needs very different food from a 25 cm adult, and a few common mistakes cause most feeding problems.
This guide lists safe foods by age, explains how often to feed, and flags what to limit or skip. Vet advice differs on a few points, so the guide names each source.
How this was made: prepared with AI assistance and checked against the sources listed at the end. Images are AI-generated illustrations, not photographs of real animals or products.
Key Takeaways
- Axolotls are carnivores and eat live or meaty foods, not plants.
- Larvae start on newly hatched brine shrimp or daphnia.
- Adults eat earthworms, bloodworms, blackworms, brine shrimp and pellets (RVC).
- RVC says to feed juveniles daily and adults 2 to 3 times a week.
- Whiteworms and grindal worms are fatty and should not become a permanent diet.
- Gravel can cause a fatal blockage, so fine sand is safer.
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What axolotls eat at each age
The table below pulls together foods named by three sources: the Royal Veterinary College (RVC), the University of Kentucky Ambystoma Genetic Stock Center (AGSC) and an Australian exotics clinic, Unusual Pet Vets (UPV). Their lists overlap, but they are not identical.
Where they disagree, the sections below show both figures so that you can decide with your vet. None of the sources lists plants as an axolotl food.
| Stage | Foods named by sources | Source |
|---|---|---|
| Larvae | Daphnia; newly hatched brine shrimp | RVC; AGSC |
| Growing animals | California blackworms from about 3 cm; small pellets | AGSC |
| Juveniles | Whiteworms and grindal worms (fatty, not for permanent use) | RVC |
| Adults | Earthworms, bloodworms, blackworms, brine shrimp, pellets | RVC |
| Adults (clinic list) | Bloodworms, daphnia, earthworm portions, brine shrimp, pellets in a small to moderate part | UPV |
What do wild axolotls eat?
The Animal Diversity Web (ADW) calls the axolotl a carnivore and the top predator in its native lakes near Mexico City. Wild prey includes fish, amphibians, insects, other arthropods, mollusks, worms and zooplankton.
Pet diets copy that pattern with safer, easier foods. For the fish question, read our guide on whether axolotls eat fish.
Food for baby axolotls
The AGSC says feeding begins when larvae come to the surface to gulp air. At that point they eat newly hatched brine shrimp. The center removes unhatched eggs and shells first to prevent intestinal blockage.
RVC lists daphnia for larvae. Caudata.org, a hobbyist reference, adds young daphnia and microworms, and says larvae can take larger foods at about 3 cm.
At about 3 cm, the AGSC moves larvae to California blackworms, which increase growth and ease the switch to pellets.
Food for juveniles
RVC says juveniles can eat whiteworms and grindal worms, but these are fatty and should not become a permanent diet. It advises feeding juveniles daily. UPV suggests once or twice a day.
The AGSC uses 4 mm pellets for animals about 4 to 8 cm long and 5 mm pellets for larger ones. Pellet size matters because axolotls swallow food whole. UPV notes that they cannot chew, so food must be small enough for them.
Food for adults
RVC lists earthworms, bloodworms, blackworms, salmon pellets and brine shrimp for adults. It advises feeding adults 2 to 3 times per week. UPV suggests several mouthfuls every second day.
These schedules differ, so adjust to your animal’s size and condition and ask an exotics vet when unsure. Our post on how often axolotls eat covers schedules by age.
UPV adds that axolotls are adapted to moving prey and may need training to recognize still food. Wiggling the food can help.
How to feed an axolotl step by step
Keep feeding tools such as tongs and dishes out of the kitchen. The CDC says reptiles and amphibians and their equipment should stay out of food areas.
- Check the water. RVC gives an optimum of 16-18°C and says it should never exceed 24°C.
- Pick a food that suits the animal’s age and mouth size.
- Offer a small portion. RVC says to offer only enough that each animal can eat in a 2 to 3 minute period.
- Wiggle still food gently so the axolotl notices it, as UPV suggests.
- Wash your hands with soap and running water afterward, as the CDC advises.
- Watch for changes in appetite, weight or behavior and call an exotics vet if they persist.
Foods and habits to avoid
Gravel is not food, but axolotls can swallow it. RVC warns that gravel can cause a fatal obstruction and recommends fine aquarium sand instead.
Fatty worms should stay occasional. RVC says whiteworms and grindal worms should not become a permanent diet.
Fish are a mixed question. RVC says food should come from fish-free water because fish can be a source of disease. UPV, by contrast, lists bite-sized fish chunks and small feeder fish among foods. When vets disagree, ask yours which approach suits your animal.
The 2022 RVC sheet also advises dusting food with calcium and gut loading it. Ask your vet whether that applies to your axolotl.
How to choose pellets and frozen or dried foods
Pick foods made for meat-eating aquatic animals, and read the ingredient list. Axolotls are carnivores, so a food built for plant-eaters is a poor match.
Match size to the mouth. The AGSC uses 4 mm pellets for animals 4 to 8 cm long and 5 mm for larger ones. Because axolotls cannot chew, per UPV, oversized pellets are a risk.
Treat pellets as one part of the diet. UPV says commercial pellets should be only a small to moderate part, with worms and other whole foods making up the rest. RVC lists salmon pellets among adult foods.
Never rely on a single product page. Compare labels, check that the food is made for meat-eating aquatic animals, and ask your vet.
Temperature, appetite and feeding
Temperature sources differ. RVC gives an optimum of 16-18°C and says water should never exceed 24°C. UPV gives 17-18°C as ideal and says axolotls tolerate 14-22°C. Caudata.org reports that wild water in Xochimilco rarely rises above 20°C and that anything above 25°C is unsuitable for more than a few days.
The ranges overlap in the middle, so aim for the cool end and use a reliable thermometer. Our guide to keeping an axolotl tank cool explains cooling options. Read our axolotl diet and axolotl food posts for related angles.
Feeding more than one axolotl
Groups bring extra risk. The AGSC reports that larvae kept in groups often suffer bite injuries to limbs and tails, and ADW records cannibalism in the species. Those injuries usually heal by regeneration, but they are a good reason to watch feeding closely.
RVC says axolotls are best housed alone. If you keep more than one, ask an exotics vet or an experienced keeper about housing and feeding before you start.
Water quality and feeding
Food only works in clean water. RVC suggests water changes of 10 to 20 percent weekly, adjusted for filtration and testing, and a pH of 7.4 to 7.6. UPV suggests a pH of 7.0 to 7.5, and the AGSC buffers its water to 7.1 to 7.6.
The AGSC says ammonia above 2.0 ppm in a recirculating system means the nitrogen cycle is out of balance. Chlorine is harmful, so use a de-chlorinator. For tank basics, see our axolotl tank set-up guide.
Common feeding mistakes
Most of these problems are easy to prevent. Check the list before each change to your routine, and ask an exotics vet if a feeding problem lasts more than a short time.
Keep a simple note of what you fed and when, so your vet can see the pattern if appetite changes.
- Overfeeding. Go by the 2 to 3 minute rule from RVC.
- Keeping gravel in the tank.
- Using fatty worms as the main food.
- Feeding from fish-containing water.
- Letting the water drift above 24°C.
- Handling the axolotl more than needed. RVC advises minimal handling because skin is susceptible to toxins.
Frequently Asked Questions
What do baby axolotls eat?
Newly hatched brine shrimp, per the AGSC, and daphnia, per RVC.
Can axolotls eat pellets?
Yes. RVC lists salmon pellets for adults, and the AGSC uses 4 mm and 5 mm pellets by size.
How often should I feed an adult axolotl?
RVC says 2 to 3 times per week. UPV suggests several mouthfuls every second day.
Can axolotls eat fish?
Wild axolotls do. Vets disagree on pets: RVC warns of disease risk, while UPV lists small feeder fish. Ask your vet.
Do axolotls eat plants?
ADW describes them as carnivores. None of the sources used here lists plants as a food.
Why is gravel a problem?
RVC says axolotls can swallow it and that it can cause a fatal obstruction.
How much should I feed?
Only what each animal can eat in 2 to 3 minutes, per RVC.
Bottom Line
Axolotls eat meaty foods, and the best choice depends on size. Start with brine shrimp or daphnia, move to worms and pellets, and keep portions small.
Avoid gravel, keep the water cool and clean, and wash your hands after every feeding. When in doubt, ask an exotics vet.
Sources
- Royal Veterinary College: Axolotl care sheet 2024, accessed 31 October 2026
- Royal Veterinary College: Axolotl care and advice (2022), accessed 31 October 2026
- University of Kentucky Ambystoma Genetic Stock Center: AGSC Guide 2024, accessed 31 October 2026
- Animal Diversity Web: Ambystoma mexicanum (University of Michigan), accessed 31 October 2026
- Unusual Pet Vets: Axolotl care sheet, accessed 31 October 2026
- Caudata.org: Ambystoma mexicanum species page, accessed 31 October 2026
- CDC: Reptiles and amphibians, accessed 31 October 2026
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