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'''Dagon''' is a minor [[Tyranid]] [[Hive Fleet]], currently active in the [[Eastern Fringe]]s and the [[Jericho Reach]] region, mainly in the [[Orpheus Salient]]. A splinter fleet of [[Hive Fleet Behemoth|Behemoth]], it detached before its the latter's destruction in the [[First Tyrannic War]]. The Tyranid Hive Fleet launched a surprise attack [[Imperial]] forces of the [[Achilus Crusade]] in 817.[[M41]], sewing widespread and death and confusion thanks to the [[Shadow in the Warp]]. The Hive Fleet has consumed at least nine inhabited worlds while immediately threatening six more. The fate of more then twenty other systems lost in the Shadow in the Warp remains unknown.{{Fn|1}}

== History ==Dagon launched a surprise attack on [[Imperial]] forces of the [[Achilus Crusade]] in 817.[[M41]], sowing widespread death and confusion thanks to the [[Shadow in the Warp]]. The Hive Fleet has consumed at least nine inhabited worlds while immediately threatening six more. The fate of more then twenty other systems lost in the Shadow in the Warp remains unknown.{{Fn|1}}  [[Herisor]] was the first world to fall to the Hive fleet Dagon, followed by attack attacks on [[Freya]] and [[Zanatov's Harbour]]. Since the discovery of Freya’s Freya's ruination in early 814M41814.M41, [[Deathwatch]] forces became aware of the Tyranid incursion. Only with their help has the Achilus Crusade managed to stall Dagon's advance. Currently the Hive Fleet’s Fleet is well supplied with bio-mass, and as such it represents a substantial threat to the Jericho Reach.{{Fn|2a}}

This hive fleet Dagon is currently scouting various system, with [[Vanguard Drone Ship]]s that have been found in over 20 twenty systems. When the Tyranid [[Hive Ships Ship]]s enter a system they immediately assault any habitable planets, while ignoring any Imperial space stations and outposts on otherwise barren planets and moons. Imperial vessels have only been attacked after they directly engaged the Tyranid void travellerstravelers. These are a few of the reasons why the commanders of the Achilus Crusade believe that the [[Hive Mind]] is operating in a conservative fashion , or else unable of identifying to recognize these as worthwhile targets. On [[Castobel]], [[Atonement]], and [[Hethgard]], Imperial defenders managed to repel enough of the spores [[Mycetic Spore]] that the battles for control of these planets have become protracted engagements. On [[Avalos]] and [[Treyen]], Imperial defenders even managed to repulse the initial Tyranid attack, causing the void-faring Tyranid creatures to leave those systems. {{Fn|2a}}

Dagon's Tyranids are very similar to the ones of Hive Fleet Behemoth, with new creatures and subtle changes in apperance of appearance from some of the previously identified strains. These variations include exoskeletal structures, colourations, and the most commonly observed weapon symbiotes used by the different Tyranid strains. {{Fn|2a}}

The most distinctive change shown by Hive Fleet Dagon is a variation in the hues of the different Tyranid creatures. The carapace on specimens from Hive Fleet Behemoth typically ranged from jet black to a deep blue. The unprotected skin of those species was typically a bright red. In contrast, the exoskeletons of Hive Fleet Dagon are generally dark grey or a blue close to that used by the [[Ultramarines ]] [[Chapter]]. In portions of the xenos where their flesh is unprotected, it is a burgundy colour.{{Fn|2a}}

In addition to symbiote modifications, these Tyranids have a higher propensity for toxicity. Having a higher tendency for venomous sacks to be found , with [[Venom Sacs]] more prevalent near their claws and fangs, which toxins have . This has increased the mortality rate of imperial Imperial forces in the Orpheus Salient. These toxins also show a substantial range of variation. Imperial [[medicae ]] personnel have been unable to identify an antiserum that works consistently against the toxins.{{Fn|2a}}

This Hivefleet has a few variants variant specimens that are believed to be completely novel, among them areincluding:

[[Harpies ]] were a significant force on the attacks on the Fortress world of Hethgard, a key strategic location in the Orpheus Salient. Numerous Imperial combat personnel, including [[Adeptus Astartes ]] of the [[Space Wolves ]] and [[Storm Wardens ]] chapters, recount witnessing the sky obscured by winged Tyranid creatures and entire mountainsides transformed into masses of thousands of roosting Harpies.{{Fn|2b}}

*{{Endn|1}}: [[Deathwatch Core Rulebook]], pgpgs. 341-342

*{{Endn|2a}}: pgpgs. 170-173*{{Endn|2b}}: pgpgs. 174-176