Starfleet Records. Species 8472. The "threat" to the Federation: The Voyager crew managed to convince them that they had no contact with Earth or hostile intentions, and they were able to negotiate a ceasefire in which they offered the modified nanoprobes in exchange for data on Species 8472's technology. Subsequently, Species 8472 returned to fluidic space. Source: VOY: "In the flesh" Star Trek: Voyager Star Trek. Live the experience. | Starfleet Command

Starfleet Records. Species 8472. Borg-Species 8472 War: The Borg-Species 8472 War was a brief, but highly destructive conflict fought between forces of the Borg Collective and Species 8472. The war was fought over at least five months, ending in early 2374. The war was triggered by Borg incursions into fluidic space – Species 8472's native realm. However, Species 8472's biological integrity proved highly resistant and up to being completely impervious to Borg assimilation. Species 8472 destroyed