An electric eel is a "knifefish" or Gymnotiformes. They are more closely related to catfish.
The eel is not electric and is able to be touched by human where as the electric eel will zap you if you touch it.
The electric organs in an electric eel make up four-fifths of its body, which in terms create a static-like glow, determining it's name. Although it has 1/5 of the rest of it exactly like for...
to kill the fish that they eat
yes they are not to the touch but they run like a battery they can emit an electric charge and deliver it to its predator or prey.