I agree with a previous post (2006) I have a Electric cat (22 cm) with some Synodontis eupterus/ nigreventis/angelicus and they seems to no not bother about the
electric shocks even though they squeeze some times when the got chasen away competing for food.

What do you feed it with ?? I

Yes that is in plan

I have a Electric Catfish (malapterurus electricus, i think) in a quite small aquarium , 56 liter a got him a year ago and it was around 6 cm now he is 18 cm (inches ).
What do you feed it with ?