1. Look around the room and notice that there are 4 colors, as well as 4 fishes matching those colors swimming.
2 yellow (2 yellow starfish)
3 green (3 green tiles)
4 blue (4 blue stripes on fishing pole)
5 red (5 red tiles)
2. Now catch all of the fish by pressing the reel part of the fishing pole to lower it.
For perfect timing: Press it right when the fish is about to disappear on the left.
Now depending on the order you caught the fish, enter the code into the keypad. In my game, I caught them in the order: red green yellow blue (see picture above).
Therefore the code was 5324.
Press the keypad and enter your code.