Ok, I know that the only fish that is suggested to be possible to keep with an electric catfish are Syno species, but the guppy that was originally in my tank to cycle it is more than alive and kicking with no ill effects, and for the last few weeks the tank has been home to about 20 or so ghost shrimp, all with no problems as far as I can see. So I was curious, is the e. cat's electrical charge transmitted through the water, or does another fish actually have to be in contact with it's body to be zapped? If the latter is the case, would is be possible to find a smaller, non-aggressive surface dweller to keep in the tank with the e. cat?