Edition differences: original GBA and Nintendo Switch (2026)

Battle data describes Generation III rules. Availability notes distinguish native catches, evolution and breeding from original GBA imports. GBA games can trade with compatible Generation III games after the network quest; Switch supports local FireRed/LeafGreen trading and cannot import Pokémon from other games. Transfers to Pokémon HOME are one way.

GBA: AuroraTicket and MysticTicket required historical event distributions. Switch: both tickets are added after entering the Hall of Fame, providing access to Deoxys on Birth Island and Lugia/Ho-Oh on Navel Rock. Other event Pokémon and GBA imports are not made available by these tickets.

Original GBA: a roaming Entei or Raikou that successfully ends an encounter with Roar disappears permanently because of a game bug. The Switch editions fix this Roar disappearance bug.

Back to Pokédex

Ariados

#168 in the National Pokédex • Long Leg Pokémon

Normal

Shiny

Spinarak Chinchou

Pokédex entries

FireRed

A single strand of a special string is endlessly spun out of its rear. The string leads back to its nest.

LeafGreen

It spins string not only from its rear but also from its mouth. It is hard to tell which end is which.

Details

Types

Weak to

2×

2×

2×

2×

Resists

0.25×

0.25×

0.5×

0.5×

Growth

EV yield, catch rate, and experience details for this Pokémon.

EV yield	2 Atk
Catch rate	90
Base Exp.	134

Eggs

Egg groups, gender ratio, and hatching details for this Pokémon.

Egg groups	Bug
Gender	50% male 50% female
Egg cycles	15 (4,095 steps)

Evolution

Evolution requirements shown in a compact table or chain view.

Pokémon	Requires	Evolution
Spinarak #167	Level 22 Requires the National Pokédex.	Ariados #168

Moves

Moves this Pokémon learns naturally by reaching specific levels.

		Class				Description
Start	Poison Sting	Physical	15	100	35	The foe is stabbed with a toxic barb, etc. It may poison the foe.
Start	String Shot	Status	-	95	40	The foe is bound with strings shot from the mouth to reduce its SPEED.
Start	Constrict	Physical	10	100	35	The foe is attacked with long tentacles or vines. It may lower SPEED.
Start	Scary Face	Status	-	90	10	Frightens the foe with a scary face to sharply reduce its SPEED.
6	Scary Face	Status	-	90	10	Frightens the foe with a scary face to sharply reduce its SPEED.
11	Constrict	Physical	10	100	35	The foe is attacked with long tentacles or vines. It may lower SPEED.
17	Night Shade	Physical	-	100	15	An attack with a mirage that inflicts damage matching the user’s level.
25	Leech Life	Physical	20	100	15	An attack that absorbs half the damage it inflicted to restore HP.
34	Fury Swipes	Physical	18	80	15	The foe is raked with sharp claws or scythes two to five times.
43	Spider Web	Status	-	-	10	Ensnares the foe with sticky string so it doesn’t flee or switch out.
53	Agility	Status	-	-	30	The user relaxes and lightens its body to sharply boost its SPEED.
63	Psychic	Special	90	100	10	A strong telekinetic attack. It may also lower the foe’s SP. DEF stat.

Machine compatibility for Generation III. HM08 Dive cannot be obtained in FireRed or LeafGreen; a Pokémon must learn it in another Generation III game and be traded in on GBA. Switch has no incoming transfers from those games.

		Class				Description
TM06	Toxic	Status	-	85	10	A move that badly poisons the foe. Its poison damage worsens every turn.
TM10	Hidden Power	Physical	-	100	15	An attack that varies in type and intensity depending on the user.
TM11	Sunny Day	Status	-	-	5	The sun blazes for five turns, powering up FIRE-type moves.
TM15	Hyper Beam	Physical	150	90	5	A severely damaging attack that makes the user rest on the next turn.
TM17	Protect	Status	-	-	10	Enables the user to evade all attacks. It may fail if used in succession.
TM19	Giga Drain	Special	60	100	5	A harsh attack that absorbs half the damage it inflicted to restore HP.
TM21	Frustration	Physical	-	100	20	This attack move grows more powerful the less the user likes its TRAINER.
TM22	Solar Beam	Special	120	100	10	A 2-turn move that blasts the foe with absorbed energy in the 2nd turn.
TM27	Return	Physical	-	100	20	This attack move grows more powerful the more the user likes its TRAINER.
TM28	Dig	Physical	60	100	10	An attack that hits on the 2nd turn. Can also be used to exit dungeons.
TM29	Psychic	Special	90	100	10	A strong telekinetic attack. It may also lower the foe’s SP. DEF stat.
TM32	Double Team	Status	-	-	15	The user creates illusory copies of itself to raise its evasiveness.
TM36	Sludge Bomb	Physical	90	100	10	Filthy sludge is hurled at the foe. It may poison the target.
TM42	Facade	Physical	70	100	20	An attack that is boosted if user is burned, poisoned, or paralyzed.
TM43	Secret Power	Physical	70	100	20	An attack that may have an additional effect that varies with the terrain.
TM44	Rest	Status	-	-	10	The user sleeps for two turns to fully restore HP and heal any status problem.
TM45	Attract	Status	-	100	15	If it is the other gender, the foe is made infatuated and unlikely to attack.
TM46	Thief	Special	40	100	10	An attack that may take the foe’s held item if the user isn’t holding one.
HM05	Flash	Status	-	70	20	A blast of light that cuts the foe’s accuracy. It also illuminates caves.

Tutors

Moves this Pokémon can learn from move tutors in this game.

	Class				Description
Body Slam	Physical	85	100	15	The user drops its full body on the foe. It may leave the foe paralyzed.
Double-Edge	Physical	120	100	15	A reckless, life-risking tackle that also hurts the user a little.
Mimic	Status	-	-	10	The user copies the move last used by the foe for the rest of the battle.
Substitute	Status	-	-	10	The user creates a decoy using one-quarter of its full HP.

Traits

Ability options available to this Pokémon in this game.

Swarm

Ups BUG moves in a pinch.

Strengthens Bug moves to inflict 1.5× damage at 1/3 max HP or less.

Insomnia

Prevents sleep.

#167

Spinarak

#170

Chinchou

Join Discord

Join a community of 5,000+ Trainers.

discord.gg/dittobase