Actually I've heard of these fish before. Only the people who were using them would submerge their entire body because they all had things like excema, psorisys (I know I badly misspelled those) and other things like that. The fish will eat the patches of diseased skin offering the sufferers a lot of relief.
I would like to have a pond of those fish in my backyard. Not just for myself but for my dog who happens to have excema and is always digging and scratching herself. None of the medications she's been given works.
And the tickling sensation for myself would be sheer heaven! 😛oke3: