Why Is My Axolotl Floating? Causes & Solutions

Floating is one of the most alarming things an axolotl owner can witness. Understanding the cause helps you respond appropriately.

Normal vs Abnormal Floating

Normal: axolotl swims to the surface, gulps air, and returns to the bottom within seconds. This is how they supplement their oxygen intake and is completely normal behavior.

Abnormal: axolotl floats at the surface and cannot return to the bottom, or keeps floating back up after trying to swim down. This indicates a buoyancy problem.

Common Causes

1. Swallowed Air

The most common cause, especially after eating at the surface or during feeding.

Signs: floating immediately after eating, no bloating, otherwise behaving normally Solution: wait 24-48 hours. Most air passes on its own. Avoid feeding at the surface.

2. Constipation / Gas

Food fermenting in the gut produces gas that causes buoyancy issues.

Signs: bloated belly, no poop for several days, may have been recently overfed Solution: fast for 3-5 days. Move to a shallow container with clean, cool water. Gentle belly massage can help.

3. Impaction

If the axolotl swallowed gravel or an oversized food item, a physical blockage causes gas buildup.

Signs: severe bloating, complete food refusal, lethargy, floating for days Solution: fridging at 4-8°C to slow metabolism and encourage the obstruction to pass. If no improvement in 5-7 days, consult an exotic vet.

4. Infection

Bacterial or parasitic infections can cause fluid buildup (ascites) or gas production in the body cavity.

Signs: floating combined with other illness signs (lethargy, gill problems, appetite loss, skin discoloration) Solution: address the infection. Salt baths, improved water quality, and possibly antibiotics from a vet.

5. Ammonia/Nitrite Poisoning

Poor water quality can cause tissue damage that leads to buoyancy issues.

Signs: red patches on skin, curled gills, floating, lethargy Solution: immediate 50-80% water change. Move to clean water.

Step-by-Step Response

1. Move to a shallow container (water just covering the body) with dechlorinated, cool water (16-18°C)
2. Fast for 2-3 days (no food at all)
3. Test the main tank water (ammonia, nitrite, nitrate)
4. Observe for 48 hours: if the axolotl passes gas/poop and sinks, the issue is resolving
5. If no improvement: try fridging at 4-8°C with daily 100% water changes
6. If still floating after 5-7 days: consult an exotic veterinarian