Were you looking for the similarly named fish, Fluffy the Fish?
Fluffy is a blue puffle who has appeared in two comics on ClubPenguin.com. He appeared in the comics Sit Fluffy, Sit!! and The Mind of a Puffle. He is not very intelligent, as seen in his second appearance, The Mind of a Puffle, where he thought a top hat was food. Some penguins name their blue puffle fluffy.