Axolotls are fascinating aquatic creatures that have recently exploded in popularity as pets. If you’re an axolotl owner, you may be wondering what to expect if your axolotl gets pregnant. Pregnant axolotls require special care and preparations.
Read on to learn everything you need to know about pregnant axolotls.
If you’re short on time, here’s a quick answer to your question: Axolotls usually become pregnant between 5-12 months old. Females can lay 100-300 eggs. Eggs hatch in 10-14 days. Babies survive on yolk sacs for 2 weeks before needing food. Provide lots of hiding spots and clean water.
Recognizing the Signs of Pregnancy
Physical Changes
As axolotls prepare for spawning, their bodies undergo some incredible transformations. One of the first signs a female axolotl is gravid (pregnant) is a swelling abdomen as the eggs develop internally over the course of 2-4 weeks.
Her cloaca, the single opening for waste, eggs, and sperm, will become enlarged and more pronounced. Additionally, females may double in size compared to their non-gravid weight.
Another distinct indicator is a difference in coloration. Non-pregnant females sport a brown, olive green, pale pink or gray complexion. However, the hue shifts to blue-gray when carrying eggs. The shade results from increased blood flow and vascularization.
Plus, dark freckles and spots often speckle the skin. These markings likely help camouflage the mother to be while she is vulnerable and slower moving.
Behavioral Changes
Along with transforming looks, bearing offspring ignites behavioral changes too. As the gestation deadline nears, females start waddling instead of walking. Their awkward exaggerated stride compensates for the unbalanced weight of the clutch inside.
Another adjustment is increased isolation. While these salamanders normally live harmoniously in same-sex groups, gravid ladies withdraw to quiet corners alone. This signals the others to give her space as motherhood approaches. They spend hours resting in preparation for the grueling birth ahead.
In fact, some sources estimate they conserve 90% of their energy just for laying eggs!
Once the female identifies a suitable nesting location, like an aquatic plant or cave, she waits for a male suitor to fertilize the eggs externally. Rather than laying then mating, axolotls only spawn once a partner arrives.
The breeding dance ritual involves the male nudging and stroking the female with his snout until she releases her clutch in portions. Then, he follows behind to complete fertilization.
| Average Clutch Size | 300-1,000 eggs |
| Average Eggs Laid Per Minute | 10-12 eggs |
| Time Between Laying Each Portion | 5-10 minutes |
To learn more about pregnant axolotls, check out reliable sources like Caudata or speak to an exotic veterinarian.
Axolotl Egg Laying and Hatching
When Do Axolotls Lay Eggs?
Axolotls reach sexual maturity between 1-2 years of age. Females are ready to breed when they are about 15 cm (6 inches) long. The breeding season for axolotls is primarily in the winter and early spring months when water temperatures fall below 18°C (64°F). Cooler water triggers axolotl reproduction.
During this time, a female will lay between 100-1000 eggs! The eggs resemble small pearls with a jelly-like coating.
Axolotl eggs are usually laid on the bottom of the tank or on broad-leaf plants. The male will then externally fertilize the eggs as the female lays them. Interestingly, a single female can retain sperm inside her body for up to a year after mating.
This means she can produce and lay numerous clutches of fertile eggs without having to mate again. A handy trick of nature!
Egg Development and Hatching
Once laid, the fertilized eggs will hatch in 10-14 days depending on water temperature. Warmer water speeds up hatching, while cooler water slows it down. Newly laid eggs are delicate and should not be disturbed. Ensure stable water parameters during egg development.
When ready to hatch, the larvae will break out of their jelly capsules using a temporary triangular tooth that recedes after a few days. For the first 2-3 weeks, the larvae live off their yolk sacs and do not need to be fed.
Once the yolk is fully absorbed, they will begin eating small foods like newly hatched brine shrimp. Metamorphosis into juvenile axolotls takes about 3-6 months. Amazingly, in some rare cases axolotl eggs can even hatch inside the mother before being birthed out fully formed!
Raising axolotl eggs and larvae does require special care. Consult an experienced axolotl breeder for guidance. With the right tank setup and water parameters, it is a rewarding experience watching axolotl eggs develop and hatch over time.
Who knows, you may even end up with hundreds of adorable baby axies!
Caring for Pregnant Axolotls
Tank Setup
Providing the proper tank setup is crucial for the health and wellbeing of pregnant axolotls (Ambystoma mexicanum). An aquarium or plastic tub that is 20-30 gallons should suffice for a small clutch of eggs, while a larger tank of 40+ gallons may be needed for a very large clutch.
Be sure to use an axolotl-safe fine gravel or bare bottom, as they can accidentally swallow rocks and become impacted. Adding live or silk plants, as well as PVC hides, provides enrichment. Maintaining excellent water quality via efficient biological filtration and regular partial water changes is also extremely important.
Water Parameters
Pregnant axolotls require pristine water conditions for proper egg development. Ideal parameters are 60-68°F temperature, pH between 7.0-8.0, and 0 ppm ammonia and nitrites with < 20 ppm nitrates. Test strips or liquid test kits should be used daily to closely monitor the nitrogen cycle.
Chlorine remover and bacterias supplements help stabilize the aquarium. Being cold-blooded, any rapid temperature fluctuations can shock pregnant axies and threaten the viability of the eggs. Thus a submersible heater with external controller is recommended for maintaining a stable environment.
Nutrition
Providing a nutritionally balanced diet is vital for pregnant axolotls to properly develop their eggs. High quality axolotl pellets, live blackworms, red wigglers, or frozen bloodworms are excellent choices.
Feed adults 2-3 times a day so the female can acquire sufficient protein and calcium for her growing brood. Some owners recommend dusting food with supplements like calcium and vitamin D3 once a week. Track any noticeable weight loss in the female too.
After laying, she may not eat for a few days up to two weeks while recovering her strength. But be sure to separate her into a hospital tank if she loses interest in food for more than two weeks as that can indicate a serious health problem.
Raising Axolotl Babies
First 2 Weeks
The first two weeks of an axolotl’s life are critical for their development and survival. Newborn axolotls, known as larvae, still have some of their yolk sack attached which provides essential nutrients. Within 24 hours after hatching, the larvae will absorb the yolk sack for nourishment.
It is important not to feed baby axolotls before they fully absorb the yolk sack or it could harm their health.
Axolotl larvae are very vulnerable when they first hatch. It is advisable to avoid changing the water or cleaning the tank during the delicate two week period after hatching. Frequent water changes can quickly deteriorate water quality which can be fatal to the newly hatched larvae.
Their gills are also underdeveloped at this stage.
Feeding Baby Axolotls
Once axolotl babies fully absorb their yolk sack at around 14 days old, they can start being fed brine shrimp or very small pieces of worms. It is important not to feed larvae axolotls bigger foods as they can easily choke due to their tiny size.
When feeding juvenile axolotls, only provide enough food that they can consume within 5 minutes 1-2 times a day. Their stomach is roughly the size of one of their eyes. Overfeeding could lead to water quality issues.
Offering foods like brine shrimp through a turkey baster can help target feeding and prevent food getting stuck.
A nutritious diet is key for growth and development. Using supplements like Sally’s Axolotl Growth Food can help boost nutrients if only feeding brine shrimp.
Tank Setup for Babies
Axolotl larvae and juveniles require more delicate tank conditions as their immune systems and gills have not fully matured:
Separating babies into their own tank is advisable for closer monitoring and to prevent larger axolotls attacking the vulnerable juveniles.
According to axolotl expert website Axolotl Central, larvae axolotls have a low survival rate due to their sensitivity. However, implementing the above care tips can help raise healthy, thriving axolotl babies!
Provide pristine water conditions, target feed nutritious foods, and monitor them closely in their first few weeks of life.
Conclusion
Pregnant axolotls require some special accommodations, but with the right tank setup, water parameters, and nutrition, you can help set mama and babies up for success. Recognizing pregnancy early and preparing the tank will make things smoother when eggs are laid and hatch.
With a little extra care, you’ll soon have a thriving batch of adorable baby axolotls.
