Screenshot from the episode.
"Trick-or-Treat, Mr. Grumpfish!" 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 21, 2016.
Plot[]
On Halloween, the Guppies choose their costumes, go trick-or-treating and turn their classroom into a haunted house in hopes of trying to scare Mr. Grumpfish.
External links[]
See the article on Trick Or Treat Mr. Grumpfish! on Fandom's BubbleGuppies wiki.