Fish Tycoon Cheats
Enter the following while playing the game.
Code: Y, Y, Y, Y, Y
First, start up 'Fish Tycoon' and go to the options screen. Set the speed of the time to 'x2'. Go to your tank and make all your adult fish pregnant, then put them in the sale tank. Because you set the speed of time to 'x2' they will sell quicker, and it is almost definite they will be sold for lots of money.