Gurgle is a royal gramma fish who resides in the dentist's office fish tank. He is germophobic and incredibly pessimistic, doubting the possibility of Gill's plans working and getting increasingly nervous and frustrated when the plan to break the tank filter goes into motion. He often argues with Bloat.
Gurgle is first seen swimming and approaching Nemo hiding into a diving helmet decoration, along with Bubbles, Bloat, and Deb due to Nemo not feeling comfortable of living in the fish tank when he arrives. When Nemo asks the Tank Gang to know where his father is at and when Peach tells Nemo that his father Marlin may be at the pet store, Gurgle says he comes from a fish emporium called "Pet Palace". When Nemo says he is from the ocean, Gurgle then calls Jacques to clean Nemo because he is from the ocean. Bloat and Gurgle suddenly argue to know which tool the dentist is using on a patient, which results him being inflated in which Deb deflates him. Later, Gurgle, along with Deb, Bubbles, and Bloat, try to get Nemo out of the tube whom he was trapped into, but a moorish idol named Gill stops them and tells Nemo if he could try escape the tube by himself in which Nemo successfully does so. Later that night, Gurgle and the rest of the Tank Gang accept Nemo into their group while Gill makes a plan to escape from the fish tank.
The next day, Gurgle, along with Bloat and Deb, is seen watching Nemo to do the escape plan and after Nemo successfully jams the filter fan with a pebble and the filter fan activates again, Gurgle and the rest of the Tank Gang rescue Nemo from falling into the filter fan. The next day when the Tank Gang makes the tank filthy, Gurgle is seen swimming around nervously because the tank has too much algae all over it. The next day, Gurgle and the rest of the Tank Gang discover that the AquaScum 2003, an upgraded tank filter, was installed into the fish tank, preventing fish from escaping which makes him enraged that the dentist installed the AquaScum 2003 into the fish tank. Gurgle is later seen along with Bloat, Deb, Bubbles, and Jacques helping Gill stop Darla from harming Nemo. Gurgle and the rest of the Tank Gang are seen congratulating Gill for saving Nemo from Darla.
During the epilogue, Gurgle and the rest of the Tank Gang manage to escape the fish tank. She and the rest of the Tank Gang (still in their plastic bags) are seen cheering on Peach who successfully makes her way to the ocean. During the credits, Gurgle is seen arguing with Bloat and when Bloat inflates, he and Gill use him like a volleyball while Gurgle swims offscreen to retrieve him.
Gurgle and the rest of the Tank Gang are seen at the post credits of the film, still trapped in their algae-covered plastic bags. He and the rest of the Tank Gang are captured by two Marine Life Institute volunteers upon arriving in Morro Bay.
- The model for Gurgle was reused for the fish in Boundin'.
- In the LeapPad Finding Nemo book, Gurgle's only way of communicating is blowing bubbles.
- Gurgle wasn't referred to by name in the film and its sequel. His name was given in promotional material and the credits of the film and its sequel, however.
- When the fish start bashing the AquaScum 2003 for foiling their escape plan before Dr. Sherman scoops Nemo out of the tank, Gurgle appears to hate the AquaScum the most, with him swimming up to it and yelling, "CURSE YOU, AQUASCUM!!!"
- Ironically, after Gurgle yelled, "CURSE YOU, AQUASCUM!!!" his wish that the AquaScum filter would break down came true at the end of the movie when he and the rest of the Tank Gang escaped to freedom.
- Also, it would contrast on his phobia on germs that the AquaScum 2003 cleans the tank and his doubts about escaping the tank.