morgan
Fish Herder
If you had a mains electric shock you would be thrown a few feet wouldn't you? My husband had a mains shock while doing some electrics and he was thrown off his ladder! I have had static shocks when putting my hand in the tank water which feels sharp and unpleasant. I posted about this as I have a lot of static electricity on me and I was worried it might hurt my fish. I have found that if I put my hand in closed I don't give/get static shocks.It sounds more like static shocks to me. I know that doesn't answer what happened to your fish, just my opinion! 
/www.fishforums.net/index.php?showto...hl=electrocuted