My mind thought of electric fish today and that Egyptians kept electric fish and they can be found back on egyptians tombs.
Specifically Malapterurus electricus, an electric catfish that sporadically can be found in tropical fishstores. It can produce
up to 450 Volts. An electric eel can produce up to 600 Volts. In Artis, a zoo in Amsterdam, I saw a large fishtank with two
electric eels in it. There was an indicator in contact with the water showing the currentflow/voltage in the water. The
attached light/led was almost on continuously.
Offered by Michel.