The Rathian is my favourite monster so I will give tips on how to fight this and other monsters in my page.
Rathian is the female counterpart of the Ratholos and also renowned as The Queen of the Wyverns. Rathians are green wyverns that slightly vary from Rathalos in looks and attacks. She has a patch of brown thorns on her upper back and her tail spikes are filled with poison. The Rathian fights on the ground a lot more than the Rathalos, who more often exhibits aerial attacks such as fireballs and claw attacks. They are prized for their rare Plkates and Rubies. The Rathian has two other subspecies, the Pink Rathian and Gold Rathian.
The rathians strongest attacks are fire and poison. The weakest points are dragon and thunder.
Armor: Queropeco armor
Weapon:Lagiacrus thunder strike switch axe
Rathalos are medium to large-sized flying wyverns, with their most notable features being their crimson appearance and fire patterned wings. Rathalos inhabit many areas; they are most commonly found in the Forest & Hills, along with the Volcanic zone and the Swamp zone. In Monster Hunter 3 they can be found in the Volcano and Deserted Island. This ability to live in the strangest and harshest of climates makes the Rathalos renowned far and wide as the King of the Wyverns.
Its strongest attacks are fire and poison and its weakest point is dragon.Armor: Rathian armor.
Wepon: Lagiacrus thunder strike switch axe.