Type any of the following codes at any tank screen:
|zombie||All Fish Appear Dead|
|space||Background is Space|
|void||Background is White|
|welovebetatesters||Change Breeder Fish's Birth Noise|
|supermegaultra||Change Preggo's Birth Noise|
|wavy||Tank Background Waves|
Enter at the main screen, after you have the silver trophy.
Note: use arrow keys for the listed directions.
press: up, up, down, down, left, right, left, right, b, a.
If you buy a guppy from the virtual tank store and name it "Santa"
it will sing Christmas songs and drop bags of shells.