Deb is a blue and white striped damselfish who lives in the dentist's fish tank in Sydney, Australia. She thinks her reflection is her sister named Flo. The dentist received Deb through a mail order. She eventually escapes with the rest of the tank fish into the ocean. During the credits, since Deb is no longer in an artificial environment surrounded by glass walls, Deb now admires her reflection in a bubble until it pops.
- Deb's name and her imaginary sister's together allude to "ebb and flow", the movement of water, often in relation to natural tides.
- According to the credits and other media, Deb is listed as "Deb (and Flo)".
Media: Finding Nemo | Finding Dory | Sebastian and Dory meet Mermaid Melody Pichi Pichi Pitch (crossover) | Video Game | Soundtrack | Little Golden Book | Finding Nemo - The Musical | Finding Nemo Submarine Voyage
Characters: Nemo | Marlin | Coral | Dory | Pearl | Tad | Sheldon | Mr. Ray | Bruce | Anchor | Chum | Gill | Peach | Bloat | Bubbles | Deb | Gurgle | Jacques | Nigel | Crush | Squirt | The Dentist | Darla Sherman | Moonfish | Barracuda | Anglerfish | Seagulls | Jellyfish | Whale | Chuckles | Blenny