Getting a straight answer regarding the average size of pet axolotls can quickly get complicated. For example, many reputable sources say that axolotls generally reach nine inches, making them medium-sized salamanders. However, experienced owners will say that an axolotl will grow based on the size of their aquarium, meaning they could easily exceed 10 inches. No matter an axolotl’s size, their tank should be at least 29 gallons––ideally more. With ample size, they can enjoy a healthy quality of life and grow to their natural size.
Axolotls in Captivity Generally Reach Nine Inches
Axolotls are different sizes at different stages of development. For example:
- An axolotl hatchling will measure less than one inch, about the size of a grape.
- A baby axolotl will range from one to three inches, the length of a AA battery.
- A juvenile axolotl will measure three to nine inches. For reference, a credit card is about three inches; a dinner fork is nine inches.
- A fully-grown axolotl will measure at least nine inches, usually not exceeding 12 inches—although it’s certainly possible.
A pencil is usually eight inches, so you can expect a mature axolotl to measure just a bit more than that. It generally takes anywhere from 18 months to two years for an axolotl to reach its full size, although some sources note that an axolotl will continue growing slowly throughout its lifetime depending on its tank’s dimensions.
When setting up the ideal habitat for your axolotl, note that “bigger is better” in terms of gallonage. You would rather have a larger tank than risk having your axolotl outgrow it. What’s more, axolotls produce a lot of waste; the larger their tank, the less likely waste is to accumulate and disrupt the water parameters.
How Much Space Do Axolotls Need?
As noted, you should have 29 gallons per axolotl. Yet, there’s a lot more to consider when creating the ideal set-up. For starters, axolotls spend most of their time dwelling on the aquarium’s floor. So, you should choose an aquarium with lots of bottom space. Inside the tank, you may also opt for live plants, hiding spaces, and a fine-grain substrate to replicate the axolotl’s natural environment. These items can take up space, so plan accordingly.
Another thing to consider: your aquarium’s placement. Axolotls enjoy relatively cold water (thriving in water temperatures 60-68˚F). You should avoid putting your tank in areas prone to temperature fluctuations, such as near windows, high-traffic doorways, and areas with poor insulation. A stressed axolotl is much more prone to adverse health conditions, so you must ensure their water’s temperature remains stable.
What Are Dwarf Axolotls?
Axolotl Central is an amazing resource for both new and experienced axolotl owners alike. It shares that axolotls that do not exceed six inches are sometimes marketed as “dwarf” or “mini” axolotls. It notes that mini axolotls have limbs proportionate to their diminutive size, whereas dwarf axolotls have clear physical deformities resulting from stunted growth. These can include a curved tail, and a short, rotund torso. These traits result from genetic factors. While it may be tempting to get a mini or dwarf axolotl (especially if you live in a small space), consider this: there’s already a lot of inbreeding in the world of pet axolotls.
Breeders who intentionally pair dwarf axolotls to create smaller offspring have a smaller gene pool to work with, leading to the possibility of health problems that dramatically shorten axolotls’ lifespans. Working with a reputable axolotl breeder who conducts genetic testing and is transparent about their practices helps ensure that you adopt a healthy pet.
How Long Do Axolotls Live?
Life in the wild is tough for an axolotl; they only live five to six years! Yet, in captivity, a healthy axolotl can easily pass the 10-year mark, with some reaching the ripe old age of 15. How long axolotls live should be just one aspect to consider when deciding whether they’re the right pet for you. You should also consider:
- Budget. An axolotl needs more than a standard aquarium; they need a solid filtration system, chilled water, and a varied diet. These items can get expensive!
- Your expectations. Axolotls are certainly entertaining, but they’re not the most hands-on, interactive pets. In fact, you should avoid touching your axolotl; not only could this stress them out, but handling could hurt their slimy coating. Axolotls are a great choice if you’re looking for more of a display piece than a cuddly companion.
- Your schedule. Maintaining an axolotl’s aquarium may not be as time-consuming as a regular nine-to-five job, but it’s certainly a commitment. If testing water parameters, conducting water changes, and cleaning an aquarium seems like a lot of work, you may want to consider a lower-maintenance pet.
Alternatives to Pet Axolotls
If size is a concern when getting an axolotl, you have other options when selecting a pet amphibian. Smaller options (but not smaller commitment!) pets include:
- Tiger salamanders
- African dwarf frogs
- Green tree frogs
- Pacman frogs
- Fire belly newts
You may also consider turning your attention to certain types of fish, such as loaches or cichlids. These surprisingly interactive fish are considered lower maintenance than axolotls, all while offering a unique marine ownership experience.
Axolotls Are Not Low-Maintenance Pets
In short, while axolotls are generally less than a foot long, they’re not low-maintenance pets in any sense of the word. They have very specific care requirements that many first-time keepers may find challenging. They need chilled water, balanced water parameters, and a protein-rich, low-fat diet. Yet, with research and ample preparation, you can create a welcoming environment for your axolotl that encourages them to grow to their natural size, whether that’s a few inches or more than 12!
