The Goldfish Memory (2016)

Armando and Gualtiero are two elderly homosexuals who have been living together for fifteen years now. One day, though, the unthinkable happens: Armando, suffering from Alzheimer's, no longer recognizes his partner and, as if that weren't enough, he believes he is married to Paloma, their South American caregiver. Gualtiero's attempts to win back Armando turn out to be holes in the water, but where the man fails, the goldfish arrives, Elton John, who keeps a secret in his aquarium.