Fish Potion

The Fish Potion is a red potion invented by Professor MacKrill from Help! I'm a Fish. It was at first gonna be tested by himself while Fly was going catch his transformation on camera, but ended up getting drunken by the kids instead, turning Fly into a Californian Flyfish, Stella in a starfish and Chuck into a jellyfish. It also has a yellow potion that is the antidote to turn anyone who drinks it back to normal. After drinking it and turning into fish, the kids had to find an drink the antidote to turn them back to humans in less then 48 hours, or else they'll stay being fish forever.