Blooper

are enemies in.

Characteristics
Bloopers are -like enemies that are encountered in an underwater passage of Catfish's Maw. Unlike Cheep-Cheeps, which slowly swim back and forth in a set path, Bloopers move in diagonal, lurching motions towards Link, making them harder to avoid. Bloopers only appear in one passageway leading to the dungeon's Nightmare Key, and always appear in pairs. Unlike their Mario counterparts, they can be dealt with easily using any weapon in Link's arsenal, with the Sword being the most immediately effective.

In Bloopers appear in the Fishing Pond and can be caught by Link while fishing.

Trivia

 * Bloopers are directly based on the enemies from the  series.