Gyarados' evolution is the simplest in the pokemon world. When Magikarp reaches level 20 then, evolve into gyarados. It is able to transform into mega Gyarados with the help of Gyaradosite. Initially, Gyarados is the fish like pokemon and looking very weak but when it evolves into gyarados it becomes one of the powerful water-type pokemon and it is most furious in battle against any pokemon.
