There are some surprises in Insaniquarium! Here's the list:
1. Make fish look dead - type "zombie" when you are looking at a tank. Type again to disable
2. Change background to space - type "space" when you are looking at a tank. Type again to disable.
3. Change background to white - type "void" when you are looking at a tank. Type again to disable.
4. Change Prego's breeding sound to ultra - type "supermegaultra" when you are looking at a tank. Type again to disable the sound.
5. Make tank look wavy - type "wavy" when you are looking at a tank. Type again to disable.
6. How to change Breeder's breeding sound to original (Prego's breeding sound) - type "welovebetatesters". Type again to disable.
7. How to transfer shells to another user - type "give" at the main menu. Will fail if you have not reached Tank 2-1.
8. How to enter Sandbox Mode - tap the following keys on the keyboard at the main menu: "up, up, down, down, left, right, left, right, B, A". Will not work if you haven't received the blue trophy.
9. How to get a santa fish - buy a guppy in Virtual Tank and name it "santa". You cannot get more than one.
10. a minor easter egg - if you click on the mermaid on the main screen the tail will flap
11. How to display time in your tank - type "time" when looking at your tank. Will not work on Virtual Tank.