Three Bonus Practice Levels
     Beat Arcade Mode once.

Change Lure Color
     At the Lure Selection screen in Consumer Mode, press Up or Down.

Play as Female Character
     At the Arcade Mode Select screen, press A + B.

Infinite Time
     When  the  start screen begins to appear, press A, B, Y, X, Y, A,
B,  L, R, Y, X, A, B, A, Y, X, Y. If done correctly, you will hear the
man say "FISH".