Hector appeared in the episodes Fish Fever and The Sorcerer's Apprentice. In "Fish Fever", Cleo put a rainbow coral into Hector's tank, without knowing that it is poisonous to fish. Hector accidentally cut himself in coral, which caused noticeable changes in his demeanor, such as an increased appetite and dullness of the scales. The same effects were seen when Emma cut herself on a much larger piece of the same type of coral. Hector and Emma were later cured thanks to Lewis McCartney and Laurie.
In "The Sorcerer's Apprentice", Rikki accidentally gets some magic water to Cleo's aquarium, trapping Hector in a floating bubble of water. Fortunately, Cleo, Rikki, and Bella rescued Hector before Will discovered their secret.