Mostly fire element's weaknesses are Water and Ice.....BUT...on some fire type Pokemon's Weaknesses also include Psychic.....Happy Training you Pokemons!
Fire, Flying, Psychic and Rock based attacks. Check pokemondb.net, it has info about everything.
Fairy-type Pokemon are weak against Steel and Poison-type attacks.
Ground-type Pokemon are weak against Water, Grass, and Ice-type attacks.
Fire-type Pokemon are weak against Water, Rock, and Ground-type attacks.
Fire and Flying i think
Lucario is a Fighting and Steel-type Pokemon, meaning that Fire, Fighting, and Ground-type attacks are its weaknesses.
Caterpie is a bug Pokemon, so it's weak to Fire, Flying, and Rock type attacks.
Fire, Flying, Psychic and Rock based attacks. Check pokemondb.net, it has info about everything.
You need to know there weakness... They use Water type Pokemon, and Water type Pokemon are weak against Grass type attacks... If you're using Fire type, then that's maybe the reason, 'cause Fire type attacks deal less damage against Water while Water attacks deal high damage against Fire.
Fairy-type Pokemon are weak against Steel and Poison-type attacks.
Ground-type Pokemon are weak against Water, Grass, and Ice-type attacks.
Psychic Pokemon are weak to Dark Type attacks
Fire-type Pokemon are weak against Water, Rock, and Ground-type attacks.
Fire-type Pokemon are weak against Ground, Rock, and Water-type attacks.
Fire and Flying i think
Fight, fire and rock type moves.
Fire type weaknesses is water,rock,and ground,