So what is the best animal, I can put with my Axolotl so it can eat the algae and slime off of the decorations. What kind or type is the animal if so?
You cannot house most species with axolotls because
a) most wont tolerate the cold water temperature
b) They will harm your axolotl
c) your axolotl will eat them
Snails and shrimp can help clean up the tank a bit, but more often than not, they become a snack. Just clean your tank and decorations by hand. Because axolotls don't tolerate light well, you really shouldn't be having an algae problem anyway. If you're experiencing a clear-ish slime in your tank, that's generally a result of too much organic waste in your tank and you should be doing water changes more frequently.