Incidental 35, credited as the "skinny fish," is a background character who appears throughout the first two seasons. He first appeared in the episode "Ripped Pants."
He is a tall light blue fish with high, light purple tight lips. He has yellow eyes with black pupils, and is usually seen wearing sunglasses. He also wears blue shorts with yellow spots and red sandals.
In the episode "Bossy Boots," he wears his sunglasses as well as a dark blue beanie.
Role in series
He is seen in the audience at Goo Lagoon. He cheers while watching Sandy and Larry the Lobster lift weights. When SpongeBob lifts a stick with two marshmallows, the skinny fish is unamused at first, but he starts to laugh after SpongeBob rips his pants.
At the Juice Bar, SpongeBob points to the skinny fish and mentions that he used to be unathletic like him. The skinny fish asks, "Who, me?" This is the only episode he doesn't wear sunglasses, the top of his head is also more pointy in this episode.