Ether-Swimming Brood
Ether-Swimming Broods are small swarms of void-capable Tyranid organisms that are launched against enemy vessels from larger Bio-Ships.
These cone-headed bio-organisms is armored by its distinctive head, which allows it to shrug off blows that would fell any other Tyranid organism before diving down on its target and unleashing its payload of explosive spores. They are the equivalent of Attack Craft and more specifically, the bombers for other races. Only a few squadron of these organisms are shot out in contrast to the swarms of Tyranid Harpies.
It can be argued that the juveniles of these things form the defensive swarm that protects the larger Tyranid Bio-Ships from enemy attack. However, for now it is unconfirmed. What is confirmed is that due to their shape, they bear strong resemblence to the old school models of a Hiveship, albeit, on a smaller scale.
Battlefleet Gothic Armada 1 & 2
The Ether-Swimming Brood as explained in the fluff, are the Tyranid's analogues of a bomber while the Harpies function like a fighter. The Tyranids could only launch a few of these, so special care must be taken so as not to lose these.
Gallery
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Potentially the juveniles. -
A swarm of these things. -
