The Little Fish are a group (of 2or 3) of fish who appear in every Bubble Guppies episode to help viewers learn the answers to any questions the Guppies ask. Easily amused and delighted, they swim to school with the Guppies and escort the home audience from segment to segment. They appear at the beginnings of episodes announcing the title of the episode.
Each of the Little Fish are an orange color, and are modeled in a similar fashion to the much bigger Mr. Grouper. They have small black eyes and 2 fins each. In The Moon Rocks!, there was a green little fish. In Fishketball!, a blue fish and purple fish was also seen.
The Little Fish have appeared in almost every episode of Bubble Guppies". Their first appearance was in Call a Clambulance!.