Screenshot from the episode.
"Haunted House Party" is a Halloween special of Bubble Guppies, an animated TV series for preschoolers. It was first shown on Nick Jr. in the United States on October 24, 2011.
Plot
The Bubble Guppies are invited to a costume party at a haunted house. They dress up as witches, vampires, werewolves, zombies and mummies, but cannot figure out the identity of a guest disguised as a ghost.
External links
See the article on Haunted House Party! on Fandom's BubbleGuppies wiki.