Your aim is to buy and sell these fish to make as much money as possible. Press 1 to buy gold fish, press 2 to sell gold fish. The price trend of gold fish is represented by the golden line graph. Press 3 to buy salmon, press 4 to sell salmon. The price trend of salmon is represented by the orange graph. Press 5 to buy sardines, press 6 to sell sardines. The price trend of sardines is represented by the grey line graph. Press A to increase the scale, press S to decrease the scale. Press space to clear and reset the graph.
Sometimes, the graph goes off the screen. To fix this, increase the scale. TIP: Buy the fish when they are cheap and sell it when they are expensive. Updates: 27/10/25: v1.2: Tweaks to difficulty. Added "events" when the general price increases or decreases a bit more than usual. Added compound increase to money in the bank. 26/10/25 v1.1: Added salmon. Changed the graph colour to better match the fish. Gold fish pricing and the starting money has increased.