23 February 2026

How to Get & Evolve Nidoran in Pokemon FireRed & LeafGreen

By newsgame

Nidoran♂ and Nidoran♀ evolve into Nidoking and Nidoqueen, respectively, in Pokemon FireRed and LeafGreen, both worthy additions to any team. However, reaching the final evolution stage for these Pokemon requires the aid of an evolution stone, one that is not sold at any shop.

Players looking to get their hands on a Nidoking or Nidoqueen will need to know where to find and catch Nidoran in their game, as well as the location of the evolution stone to reach the final stage.

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How to Get Nidoran in Pokemon FireRed and LeafGreen

nidoran male and nidoran female in pokemon firered leafgreen

Nidoran♂ and Nidoran♀ can be found in three locations in Pokemon FireRed and LeafGreen:

Route 3
Underground Path (In-game trade)
Safari Zone

Route 3

East of Pewter City is Route 3, containing two patches of grass where Nidoran♂ and Nidoran♀ can appear.

In Pokemon FireRed, Nidoran♂ has a 14% chance to appear in Route 3, whereas Nidoran♀ only has a 1% chance.
In Pokemon LeafGreen, Nidoran♀ has a 14% chance to appear in the grass in Route 3, while Nidoran♂ only appears 1% of the time.

Underground Path (Trade)

route 5 underground path in pokemon firered leafgreen

The pink-haired girl standing next to the stairs to the Underground Path on Route 5, south of Cerulean City, offers to trade a Nidoran♀ for a Nidoran♂ (FireRed), or a Nidoran♂ for a Nidoran♀ (LeafGreen). This is useful if you’re having trouble triggering the 1% encounter rate on Route 3 to get the rarer variant in your version of the game.

Safari Zone

In the Safari Zone in Fuchsia City, you can find both Nidoran♂ and Nidoran♀ , as well as their evolutions, Nidorino and Nidorina, in all four zones.

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How to Evolve Nidoran into Nidoking and Nidoqueen in Pokemon FireRed and LeafGreen

How to Get Nidoking and Nidoqueen

how to evolve nidoran into nidoking and nidoqueen in pokemon firered leafgreen

Nidoran♂ evolves into Nidorino and Nidoran♀ evolves into Nidorina at level 16 in Pokemon FireRed and LeafGreen. Then, Nidorino evolves into Nidoking, and Nidorina evolves into Nidoqueen by using a Moon Stone.

Unlike some other evolution stones, Moon Stones are not sold at the Celadon Department Store. The only way players can get them is by picking them up as pokeball items, hidden items, and quest rewards.

Moon Stone Locations

The following are all ways you can get Moon Stones in Pokemon FireRed and LeafGreen:

Mt. Moon #1: In the northwestern corner of Mt. Moon, 1F is a Moon Stone item, right above the ladder leading down to the floor below.
Mt. Moon #2: Just before the location where you find the Dome and Helix Fossils in Mt. Moon, turn east and interact with the protruding rock shown in the screenshot above to obtain another Moon Stone.
Game Corner: In the Celadon City Rocket Hideout in the Game Corner, you’ll find a Moon Stone at the northwestern corner of B2F.
Pokemon Mansion: After obtaining HM03 Surf from the Safari Zone in Fuchsia City, go to the southern edge of Pallet Town. Then, swim southward until you reach Cinnabar Island. Enter the Pokemon Mansion, and on the very first floor, look for a pile of rocks on the left. Interact with the rock in the middle to get another Moon Stone.
Sevii Islands: After getting the Meteorite from Bill, rescue Lostelle from the Hypno. Then, talk to her father in the Game Corner on Two Island for another Moon Stone.