Ichthyosaurus Curiosa is a comparatively small carnivore found in the waters around the island. It is slightly larger than a human, but that's still small compared to the leviathans roaming these waters. It seems to be very interested in any creature around its size, often approaching and following humans swimming through its waters.
Despite its appearance, the Ichthyosaurus is neither a fish nor an ocean mammal. Like many creatures in the waters around the island, it is actually an aquatic reptile.
I can't think of a better mount for someone starting to explore the island's seas and waterways. Ichthyosaurus is comparatively fast swimmer, and even in the wild will cozy right up to you and try to figure out what you're doing. Taming these is actually pretty easy, as they seem to love humans and will be fed and tamed without the use of violence.
— The Dossier
The Ichthyosaurus or Ichthy is a small carnivorous dolphin/swordfish-like reptile found in the oceans of the Ark. The Ichthyosaurus has good speed under water and can even take on a Spinosaurus. It primarily feeds on fish like Coelacanth. It is not yet confirmed if the Ichthyosaurus is breedable or not.
- The Ichthyosaurus can defend itself quite well in the water, if its fast enough. It can bite a Megalodon's tail and avoid retaliation, making it decent at defending itself at sea.
- In the dossier there is a picture that presumably depicts the relative size between the Ichthyosaurus and the Megalodon of the island. Disturbingly, there is a much larger creature behind the Megalodon. It might be a Mosasaurus or possibly a Hainosaurus, but the background creature may also be a hint at an underwater boss.
- Before patch 183.2, Ichthyosaurs would die if even a fraction of them was above the water.
- Prior to being added, Ichthyosaurus was referred to in the "upcoming week patch notes" as Shastasaurus.
- Ichthyosaurus' are reptiles, the lack of an oxygen attribute is an error.
- They are one of the few species in ark to retain their eating animation after they are tamed. However their eating animation is slightly glitched as their long snouts actually cross each other.
- Ichthyosaurus' attract Megalodons. Be careful while trying to find them a safe place.
- Although being attracted to water pets may be a benefit for players looking to tame one, not moving for even a few moments could attract enough to stop your Plesiosaur or Mosasaurus from moving.
- Despite the common belief that Icthyosaurus is playful and curious in ARK, they can actually be quite aggressive to wild terrestrial creatures. So long as a player or tamed animal is nowhere in the vicinity, Icthyosaurus are very aggressive, similar to Megalodons, and will attack just about any land animal that gets into the same vicinity of them. Although they can be found in the north killing and eating Kairuku, they often tussle with Carbonemys in warmer waters; they will attack Ankylosaurus, Carnotaurus, Raptors, and even Rexes if there is no player in the immediate vicinity. This is most likely a bug.
Trivia not relevant for the game