Mini-play

I want the action in the fish bowl to be a sort of mini-play that acts out symbolic correspondence to the characters actions. The different characters are represented as different fish within their colouring. In Christopher Nolan's prestige the action of the whole film and it's twist is given away at the start in the form of simple magic trick with a dove. I like how some of these small miniplay's can inform and reveal the plot of the story but still the viewer wont realise.