ok here is one for you, not a fish related thing but fits the topic
In my first restaurant I managed to pick up a old double barrel soft icecream machine, old school taylor. rickity old thing but it worked. was a real killer to clean though, was easiest if we moved it away from the counter slot we cut to put it in on an angle.
Well, I always cleaned it after the weekend so that it would be fresh and ready to go for the week. Had it down to a routine until the one fateful night. The floor always got kinda wet around the machine, but, hey we mopped it up at the end of the night.
Well this time when I went to push it back into place I accidentally put both of my thumbs under the lip where the connector switch was that turned on the compressor on both sides and I must have hit something that ground me to machine because the waitress said that I was moving like a jack hammer or something like that. The only thing I remember is going stone cold blind not being able to see anything then gettin thrown off the machine, and the only thing I said to my waitress was "You know, when you are getting electrocuted you can't see anything" then I went down for the count in a booth. The machine was a 220 3 phase
Now in relation to aquaria shocks. The only tanks that I have gotten shocks off of are my sw. I do not know what it is but my first gave me a shock in the water, the one I have now gives me a current hit when I touch the light corner.