Thats really cruel :(
At my lfs, the guy in charge of the fish, absolutely loves them, he's had kids come in pick a fish out with their hand and drop it on the floor, he's picked them up taken them out the back and put them in a QT till he can take them home with him to make them better before bringing them back to be sold (most of the time he just cant bear to let them go :P) but he really cares about the fish, so much so that he washes the floor...yes you guessed it, with water that has tap conditioner and stress zyme in it!!!all for the fish!!!LOL he's not happy at the moment though, some new numpty employee, has decided that even though one of the tanks has white spot in it, they're not going to sterilise any equipment they use, he now has 5-6 tanks with white spot in them, he says when he finds who's done it they will be fired!!!