Anyone who has owned a fish tank knows that it is extremely unhygienic to throw water from that bowl into someone's face ( that too, when the persons mouth is slightly open). I mean, where do you think the fish do their 'business'? Right in the tank itself! And its one thing when the fish are in lakes rivers etc, where water continuously flows somewhere, diluting the crapand breaking it down. In here, its just sitting there.. decaying.
Moreover, given the small size of that tank and the overcrowding by those helpless little fish, the tank is probably more shit-filled than any other tank on the planet.
Sheesh! And we are supposed to think this is romantic. How about putting your lovers face down in a toilet bowl for romance's sake?
Well, if you think I'm paranoid, I wonder what you'll have to say about the man who threw out one full gallon of freshly boiled water because he saw an ant floating in it...