meanwhile, nemo's captor - p. sherman, a dentist - places him into a fish tank in his office on sydney harbour. there, nemo meets a group of aquarium fish called the "tank gang", led by a crafty and ambitious moorish idol named gill. the "tank gang" includes peach, a starfish; bloat, a puffer fish; bubbles, a yellow tang; deb, a blacktailed humbug gurgle, a royal gramma; and jacques, a pacific cleaner shrimp;. the fish are frightened to learn that the dentist plans to give nemo to his niece, darla. she is infamous for killing a goldfish given to her previously by constantly shaking the bag. in order to avoid this fate, gill gives nemo a role in an escape plan, which involves jamming the tank's filter and forcing the dentist to remove the fish from the tank to clean it manually. the fish could be placed in plastic bags, at which point they could only roll out the window and into the harbor. after a friendly pelican named nigel visits with news of marlin's adventure, nemo succeeds in jamming the filter, but the plan backfires when the dentist installs a new high-tech filter.