How do you feed Charles some fish food on the impossible test three?

You can't feed Charles fish food on the Impossible Test 3. The game is designed to be a puzzle game, and feeding Charles is not part of any level.

The game relies on creative problem-solving and finding unexpected ways to interact with the environment. There's no need to feed Charles fish food in the game.

If you're struggling with a specific level, try thinking outside the box and looking for unconventional solutions!