While playing the game, press Back, then hold L and press A, B, A, Left(2), X, R, Down, X(2).
Two extra Clams and fameWhile playing the game, press Back, then hold L and press B(2), A(2), B, A, B(2).
Attack mode on at all timesWhile playing the game, press Back, then hold L and press B(4), A, B(3) or B(4), A, B(4).
Replace all Pearls with Fish King coinsWhile playing on any level with Pearls, press Back, then hold L press B, A, B(3), A, B(2).
Completing dance modeTo complete dance mode easier, press A + X + B + Y on each arrow; it will count as the arrow it is pointing to, even doubles.
Pearls in Chapter 3If you attack a puffer fish, many pearls will come out.
Staying hidden in Chapter 9When you must sneak around the fish with lights on their heads or the ones with torches, there are some tables with cloths on them that you can go under without being detected.
Avoid being caught in Chapter 9To avoid being caught by police fish, go into houses until the cops pass.