Pyrovores

A Pyrovore is a species of Tyranid which pre-digests biomass to provide minerals and fuel for a Tyranid Hive Fleet. Its body is a complex array of bladders and stomachs, driven by the instinctive need to feed, with a deadly maw dripping with corrosive acids strong enough to break down flesh, bone and armour into a smouldering mucous. They are often found on battlefields feasting on the dead and wounded, and can even devour metals and rocks. When facing an enemy, a Pyrovore can launch a searing fireball from the dorsal flamespurt bio-weapon that grows out of its own flesh. If injured, the acidic contents of a Pyrovore’s various stomachs sprays out of its wounds over its enemies; if killed, the volatile ichors of a Pyrovore’s insides have a good chance of igniting in a tremendous explosion, engulfing everything around it.