Bio-ships are the living spacecraft making up the Tyranid Hive Fleets. Although bio-ships take on a seemingly endless variety of forms, they are broadly divided by the Imperium into three major classes, depending on its general role in the Hive Fleet. The ships are also factories producing the different Species of Tyranid used in ground invasions. The ships themselves are essentially the largest species of Tyranid and are controlled by the Hive Mind.
Types of Bio-ships
- Space Fleet (game) (1991)
- White Dwarf #146 (January 1992)
- Codex: Tyranids (5th Edition), pg. 14
- Battlefleet Gothic Armada, pgs. 80-94