Press the right and left arrow keys to move the bowl and catch the Gobos. Watch out for lighting bolts! If you catch them, they give you -3 points. It takes exactly 1 minute to cycle through all of the backdrops. Comment what your high score is! My high score is 44.
Credit to @panda-rabbit for the original Falling Moon Goldfish. September 28 2017 Update: Added 4 more backdrops.