Lagiacrus Ecology

Disclaimer: This is merely a plausible explanation for the monster(s) in this article, and should not be considered canon.

In-Game Information
Known as sea wyverns, Lagiacrus are at the top of the aquatic food chain. Feared by the seafarers as, "The Lord of the Sea", they can generate electricity and release it through their spinal organs to make the ocean surge. Occasionally, they are seen resting on land when this occurs, they will appear grayer in color instead of blue.

Taxonomy
The Lagiacrus is one of the most famous and feared Leviathans, a group that also includes Agnaktor and Royal Ludroth and, like most other Leviathans, it resembles a Nothosaur.

Habitat Range
Lagiacrus are found in the Deserted Island and Flooded Forest. Despite its ability to come up on land, they prefer to stay by deep waters, they rarely travel far from it and they don't even have to due to the abundancy of creatures in both of their tropical environments.they could also be able to survive anywhere as long as theres a body of water big enough for the dragon to live so it could be possible that it can live in the cold water of the tundra or snowny mountain but has not been seen there and might have trouble with the powerful and large ukanlos.

Ecological Niche
Lagiacrus is the top predator of its habitat, even Rathalos and Rathian prefer to stay out of its business. Of course being the Lagiacrus' only real competition, the Fire Wyvern would be considered a threat to a Lagiacrus, as would a Lagiacrus to a Fire Wyvern. Despite this these animals tend to stay out of each others way at all costs, especially if the encounter is between a pregnant female of either species that is about to lay her eggs, yet a battle between a Rathalos, and a male Lagiacrus is considered to be one of the most spectacular (and dangerous) things to ever witness. The Lagiacrus is also the only aquatic predator in the Flooded Forest that can kill a well defended, venomous Gobul thanks to it's use of electrical attacks, something a Royal Ludroth or his pack of Ludroth don't have.

Biological Adaptations
Lagiacrus is a large, blue aquatic leviathan adapted to life in tropical waters. Its hood like structure is just like that of a Chameleos only it controls whether or not it wants to float in the water or sink to the bottom and cruise through the water at high speeds. The large dermal spikes on its back are used to release its electric breath alongside a possible electro sac below each spike. The spikes turn white in rage mode or brown when out of the water long enough.

Best known to live in the sea, it is also well suited for living in it. With its whitish underside mimicking the reflection of light on water surface and its blue top which blends in with the water around it, the lagiacrus can hunt prey from both below or above without being seen.

While Lagiacrus is very well adapted to the sea, it is also found in the murky river beds and steamy, wet jungles of the Flooded Forest. Here it's main prey of Epioth, Ludroth, Royal Ludroth, Aptonoth, and Kelbi are still hunted and new food items like arrowana, catfish, and Gobul are also added to the menu. Lagiacrus remains the top predator able to remain on top of the food chain with its sheer power and unique ability. Lagiacrus, like some crocodiles, live a perfect life in both fresh and salt water.

The Lagiacrus' teeth are shaped much like that of a crocodile,: large and thick, capable of inflicting puncture wounds which allow its powerful jaws to hold onto land dwelling monsters and the unfortunate hunter with the intention of dragging its prey into a watery grave.

Behavior
Lagiacrus mainly preys on large fish and smaller leviathans although it doesn't starve when this prey is scarce all thanks to another source of meat: Land dwelling monsters. It'll wait by the shoreline for anything coming by for a drink then attacking crocodile-style, using its highly specialised tail to propell its bulk out of the water, clamping its jaws on the surprised victim, and pulling it into the water where it'll drown. Lagiacrus will sometimes come up onto the land itself and stalk the jungle or valley in search of any unsuspecting prey. Whether on land or in water, they are formidable fighters.