oscars
I have 5 oscars, 2 albinos and 3 tiger, They are fine, I have 1 moody one, but it soon comes round when it gets a little attention.
They are fine with the other fish in the tank and only try to eat the pleccy occassionally.
My oscars are very hand tame and have a varied diet of fresh and dried food. in fact they'll eat almost anything, I've found that really they own me not the other way round. They are such a pleasure to keep and are much like a dog, very rewarding. They will attack a stranger so people are adivise not to put their face to close or their hand in the tank.
I've never really had a problem of them shocking, only when they really dislike something; maybe a stranger or to much activity near the tank.
I never turn the light from complete darkness to light or vice versa as that shocks me let alone a fish!!!!
there is always some form of subdued background light.
They are in a huge well filtered tank, i also due a weekly 25% water change,
such dirty messy fish...... a small price to pay for the enjoyment that I get from them.