Folks, please read the sticky that Abrahm provided a link to earlier in this thread before.
This topic is like beating a dead horse. A bit of use of the search function will show that it comes up very often in various forms...
That sticky is the result of input from not only extremely experienced hobbyists, but veterinarians and zoo keepers.
If that does not convince you, memorize the
Rules of Axolotl
#1 If it moves- eat first and ask questions later.
#2 If it does not move, gulp it up and eat it anyway.
#3 If it is smaller than your mouth, eat it. If it is bigger than your mouth, try anyway. This includes other axolotls, their limbs and gills, rocks, fingers, etc.