When I first started watching this magic trick I thought, "I've seen this card trick before.  He makes a pretty girl write her name on playing card and then makes the card reappear in her pocket."  Snore.  Well, I was wrong...

See how the card reppears inside the fish tank and the illusionist puts his arm through the fish tank wall to retrieve the card. 

Okay, so tell me where the trick mirrors are in this trick.