Tyranid Bioforms

The Tyranids are an extragalactic composite species of hideous, insectoid xenos. They comprise an entire space-faring ecosystem comprised of innumerable different bioforms which are all variations on the same genetic theme.
The Tyranids are unlike any other intelligent species encountered by Humanity. The Tyranid species is ultimately dedicated solely to its own survival, propagation and evolutionary advancement. The Tyranids collectively form a monstrous superorganism that travels across the universe in their great hive fleets of biomechanical Hive Ships, systematically consuming all other biomatter to enable their own rapid evolution and reproduction.
For further details on the specific bioforms of the Tyranids, provided are core Imperial datalogs with all known knowledge on each creature.
Threat level Epsilon
SPORE MINE
GAUNT SPECIES
GENESTEALER

Threat Level Delta
TYRANID WARRIOR
TYRANT GUARD
ZOANTHROPE

Threat Level Beta
CARNIFEX
TYRANNOFEX
LICTOR

Threat Level ALPHA
SWARMLORD
TRYGON
BIO-TITANS