Hi.
There aren't any money cheats for the game. There are ways to trick the game though, one of these is by making your fish pregnant, speeding up time, and then resetting the time after you have returned to the game and gotten your baby fish (You can also speed up the growing process by doing this). However, this is probably the worst way of doing it, as it can affect many more programmes that run using real time. And, in my opinion, it ruins the game.
Becky.