In addition to this, you will need to know more about it.

This phenomenon is observable in axolotls of light color.

When it comes to a transient state (a day or a few hours) the explanation is simple: a drop in temperature can plunge him into lethargy, he is therefore at complete rest and the blood no longer rushes into his body as quickly. gills. Being less irrigated they appear almost white. Often the body also traversed by capillaries undergoes the same loss of color, some cases are spectacular and worry people wrongly.

On the other hand, where it is necessary to monitor it is in the case where this "state" lasts longer than a day.

Why ? In this case, it may be anemia or decalcification. This should not be taken lightly, if possible consult a veterinarian who can prescribe Calcivet or calcium injections. Check your settings anyway, because a low Gh (water hardness) will already provide an answer to the problem (decalcification). The axolotl needing hard water and calcium in order to stimulate its digestive system, know that everything is linked, a drop in appetite can be observed.

You can also temporarily supplement your beef heart axolotl (raw) to help it regain strength, if this is not enough and the GH and Ph are at ideal values. The veterinarian is essential but do not make this state last too long. I also saw an axolotl pass to this state as soon as it was put in a "tupp" quarantine tank and regain its colors if put back in the aquarium, which therefore implies that it is also a state of significant stress.

In addition to this, you will need to know more about it.