Flying Fish

Flying Fish are minor, tiny ghosts that only appear in the Courtyard in Luigi's Mansion. As the name suggests, they will pop up in groups and try to hit Luigi, causing five HP of damage for each hit. Like mice, they have no HP (as opposed to 0 HP like Ceiling Surprise or Purple Bomber and can be sucked up easily by the Poltergust 3000).

Similar yellow ghost appear in the Observatory, but they're yellow and cannot be sucked up.