Very cool but yes very much not an axolotl.

An axolotl is a salamander that has evolved neoteny (imagine a frog staying as a tadpole its whole life). It's also specifically adapted to a specific lake system in Mexico City. If it is kept in water under 57°F (14°C) it will die in a few days. They are also extremely sensitive to changes in the water quality or chemistry. It's not clear that this one will even survive after being rescued

I’m surprised no one is bringing up the possibility that this is just a salamander in its axolotl looking stage of life.