Phineas and Ferb (2007)

S02E05 Backyard Aquarium

Phineas and Ferb welcome a new pet, Goldy the goldfish, and to ensure Goldy doesn’t feel lonely, they create an elaborate aquarium filled with a variety of sea creatures. At the same time, Perry the Platypus is busy thwarting Doofenshmirtz, who is concocting a scheme driven by a grudge from his childhood involving food.