When you scroll down, the game screen will blink. After you adjust the game screen to the viewable space, click onto the game screen so up/down/right/left keys would be applied to the game, not the screen scrolling. Wait until your fish dies. When the game screen turns red, press onto the space bar so you can start a new game. Remember, if navigational keys don’t apply to the game, click onto the game screen.
Press space bar to restart after death or to proceed after victory.