Filippo is Morini's fish. Morini got a fish because he was jealous of Lorenzo. Lorenzo had advised him to buy a fish in Art Learning.

Morini does not realize that he has named his fish after his boss (Filippo Gori), so when Gori comes in he says his fish is called Filiberto, but Gori later discovers the truth.

It leaves the series alongside his owner, who transfers to Milan to support his ailing mother.