Homeworld: Unknown, if any; Fluidic space
Warp capable: Yes
Borg Designation: Species 8472
Telepathic abilities: Yes, communicated though telepathy
Federation Status: Enemies
First Encountered: by Voyager (VOY episode: “Scorpion”)
Distinctive Features: tripedal, cross-shaped pupils
A sophisticated lifeform native to a realm of fluidic space a dimension apart from our universe, known only by its Borg designation because its self-ascribed name is unknown. The earliest known encounter with the species was in the 2370s when the Borg Collective began their failed attempt to assimilate the race.
Species 8472 became aware of the Milky Way Galaxy and initiated a purge of all other life forms, starting from Borg space. All their attacks against the Borg were victories and it is possible that in a matter of time, the Borg would have been potentially destroyed had it not been for the interference of the Federation starship USS Voyager who formed an alliance with the Collective and developed an effective weapon against Species 8472. After facing their first losses from the weapon, Species 8472 retreated back into their realm.