Bubbles is a hyperactive yellow tang fish. He has a peculiar obsession over the bubbles that come out of a small treasure chest decoration in the fish tank; hence his name. He eventually escapes with the rest of the tank fish into the ocean. During the credits, Bubbles notices some bubbles that appear at one end of the screen and chases after them.
- Bubbles: "So, the Big Blue. What's it like?"
- Nemo: "Uh... big... and blue?"
- Bubbles: "I knew it."
- "Bubbles! Bubbles! My bubbles."
- Bubbles has the fewest lines of the Tank Gang along with Jacques.