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This creature, item or feature is announced but not yet released.

Leedsichthys Dossier


Common Name Leedsichthys
Group Fish
Species Leedsichthys conviviumbrosia
Time Mid-Jurassic
Diet Piscivore
Temperament Defensive
PC Release Date Not Yet Released
Tameable No
Rideable No

Leedsichthys Conviviumbrosia is probably the largest fish in the waters around the island. Its meat is also extremely succulent, a surprise given its size. It is often traded with the same value as Prime Meat, and colloquially called "Prime Fish". Of course, not all of Leedsichthys' meat is this high quality, but most of it is.

While the demand for Leedsichthys meat is high, the fish is notoriously difficult to track and hunt. Between its large size, powerful attacks, incredible speed (when it turns to flee), and humankind's general ineptitude on open water, actually killing a Leedsichthys is one of the Island's more difficult tasks. The hunt for an extremely elusive breed of the fish, the fabled "Great Albino" Leedsichthys has been known to drive otherwise-sensible men and women mad with obsession, as if all evil were personified and made practically assailable in this one creature.


Despite its large size, and the fact it may well be strong enough to carry heavy loads, Leedsichthys does not appear to be intelligent enough to tame. Never the less, some large tribes keep an enormous pen with a few Leedsichthys trapped inside for cultivating purposes, as bits of Prime Fish can be repeatedly scrapped off the gargantuan beast without killing it!

— The Dossier

The Leedsichthys is a large carnivorous (piscivorous) fish found in the oceans of the Ark.

Wikipedia has a more detailed and comprehensive article on Leedsichthys






The dossier was revealed on November 16, 2015.

  • The "Great Albino Leedsichthys" mentioned in the dossier could potentially be hinting to a future boss creature in the ocean. However, it most likely is a reference to Herman Melville's novel, Moby Dick.

Trivia not relevant for the game

  • Leedsicthys is believed by some scientists to be the largest bony fish that ever lived.
  • The process of harvesting meat from it without killing it is a possible reference to the engineered food creatures in Dougal Dixon's Man After Man, or a scene in the BBC documentary series Chased by Sea Monsters where protagonist Nigel Marvin witnesses a still-living, albeit deathly ill, Leedsichthys having its flesh ripped off by small marine reptiles and sharks.
  • The genus name of Leedsichthys means "Leed's Fish." It is named after the amateur paleontologist Alfred Nicholson Leeds, for his important finds on Leedsichthys.




Gameplay Images