Junior clown fish Nemo swims too far from the reef and next thing he knows he's looping a fish tank in a Sydney dentist's office. Neurotic dad Marlin (Albert Brooks) follows in his wake, with dippy ...

A clown fish named Marlin lives in the Great Barrier Reef and loses his son, Nemo, after he ventures into the open sea, despite his father's constant warnings about many of the ocean's dangers.

Nemo hatches as an undifferentiated hermaphrodite ... In any given community, the female is the largest fish, the breeding male is the second largest and the rest are sexually immature males.