Actress and 'Running Man' cast member Song Ji Hyo expressed her fear of fish on the latest episode.

As she arrived at one of the mission locations, she was greeted by Yoo Jae Suk and Kim Jong Kook, who had already finished the mission. Song Ji Hyo became terrified when she learned that her mission was to collect a set of car keys hidden in a bowl teeming with live Chinese muddy loach.

"If you don't want to, we can share information," Yoo Jae Suk suggested, but Song Ji Hyo turned them down, selecting the fish bowl instead.

As she started fearfully speaking to the fish, the pair sitting next to them commented, "I feel like I'm watching television. Song Ji Hyo really acts well."

After a few minutes of close shaves, Song Ji Hyo finally gave in. "I can't do it. I can't be with them, really," she finally said, giving up the mission.

Check out the full episode below!