What To Do If Your Axolotl Is Floating

If your axolotl is floating at the top of the tank, it is natural to feel worried. Axolotls are bottom dwellers that normally spend their time walking along the floor of their habitat. Seeing one floating at the surface is unusual and can be a sign that something is off.

The good news is that floating does not always mean something serious is wrong. There are several possible causes, ranging from simple bloating to water quality issues. Understanding why your axolotl is floating will help you figure out the right way to respond.

Common Reasons Why Axolotls Float

Bloating and Gas

This is one of the most common and least serious causes of floating. Axolotls swallow their food whole, and this can sometimes lead to excess gas building up in their stomach or intestines. The gas makes them buoyant, causing them to float involuntarily.

Bloating can happen when your axolotl eats too much, swallows air while feeding, or eats food that has not been properly prepared. For example, freeze dried foods that have not been soaked in water before feeding can expand inside the stomach and create gas. In most cases, the bloating will resolve on its own within a day or two as the gas passes naturally.

Poor Water Quality

High ammonia or nitrite levels in the tank water can cause axolotls to float as they try to escape the irritating conditions at the bottom of the tank. Ammonia burns the skin and gills, and an axolotl may instinctively move toward the surface where the water is sometimes slightly less contaminated.

If your axolotl is floating and also showing signs like curled gill tips, redness on the skin, or loss of appetite, test your water parameters immediately. Ammonia and nitrite should always be at zero in a properly cycled tank. Nitrates should be kept below 20 ppm.

Swallowed Air

Axolotls occasionally gulp air from the surface, which is normal behavior. However, if they swallow too much air, it can get trapped in their digestive system and cause them to float. This is especially common in axolotls that are fed at the water surface or that gulp air frequently due to poor water oxygenation.

Constipation or Impaction

An axolotl that has swallowed substrate (like gravel) or has eaten something that is difficult to digest may become impacted. This means food or foreign material is stuck in the digestive tract, which can lead to gas buildup and floating. Impaction is more serious than simple bloating and may require intervention if it does not resolve on its own.

Stress

Stressed axolotls can exhibit unusual behaviors, including floating. Common stressors include water that is too warm (axolotls prefer temperatures between 60 and 68 degrees Fahrenheit), bright lighting, aggressive tank mates, or sudden changes in their environment. A stressed axolotl may also have curled gills and reduced appetite.

Illness

In some cases, floating can be a symptom of a more serious health issue such as a bacterial infection, organ problems, or swim bladder related complications. If your axolotl is floating persistently, looks lethargic, has discolored skin, or is not eating, illness may be the cause.

What to Do If Your Axolotl Is Floating

Step 1: Check Your Water Parameters

The first thing you should always do is test your tank water. Use a liquid test kit (not strips) to check ammonia, nitrite, nitrate, and pH levels. If ammonia or nitrites are above zero, perform an immediate partial water change of about 25 to 50 percent using dechlorinated water that matches the tank temperature.

Step 2: Check the Temperature

Make sure the water temperature is within the safe range of 60 to 68 degrees Fahrenheit. Warm water holds less oxygen, stresses axolotls, and can worsen floating. If the water is too warm, place frozen water bottles in the tank to gradually bring the temperature down.

Step 3: Try Fridging (for bloating)

If you suspect bloating or constipation, a technique called “fridging” can help. Place your axolotl in a clean container of dechlorinated water and put it in the refrigerator (around 40 to 45 degrees Fahrenheit). The cold temperature slows the metabolism and can help the axolotl pass gas or a blockage. Change the water daily and monitor your axolotl for improvement. Most cases of simple bloating resolve within a few days of fridging.

Step 4: Fast Your Axolotl

If bloating or impaction is the issue, withhold food for two to three days to give the digestive system a chance to clear out. After the fast, start with small, easy to digest meals like a single earthworm. Avoid freeze dried foods until the floating has completely stopped.

Step 5: Consult a Vet

If your axolotl has been floating for more than a few days, is showing signs of illness, or does not respond to the steps above, it is time to see an exotic pet veterinarian. Persistent floating combined with lethargy, skin changes, or refusal to eat could indicate a serious internal issue that needs professional treatment.

How to Prevent Your Axolotl From Floating

Prevention is always better than treatment. Keep your tank water clean and well cycled with regular water changes and proper filtration. Use fine sand or bare bottom tanks instead of gravel to prevent impaction. Soak any freeze dried foods before feeding and avoid overfeeding. Keep the water temperature cool and provide hiding spots to reduce stress. With good husbandry practices, floating is a problem you can largely avoid.