Kuniko Mukoda's Carp.

A unique suspense film depicting a woman's unresolved feelings and grudges through the eyes of a crucian carp. A bucket of crucian carp was left at the home of Shiomura (Jun Inoue), a trading company employee, by someone. Shiomura looks into the fish's giddy eyes and recalls an affair he had with Tsuyuko (Naomi Oki), a woman at a small restaurant who used to be his mistress. She had a pet crucian carp, and the crucian carp always stared intently at their love affair, and it was the same eyes.