Sea Route 21

Kanto

	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Walking in tall grass or a cave
Pidgey								55% L11–17	30% L21–23	30% L21–23
Pidgeotto								10% L15–19	15% L30–32	15% L30–32
Rattata					+30% L25 +30% L25 +30% L25			30% L13–15	30% L21–23	30% L21–23
Raticate					+10% L20 +10% L20 +10% L20			5% L15	15% L30	15% L30
Tangela	50% L20–30 +5% L30 +5% L30 +40% L25–35	50% L20–30 +5% L30 +5% L30 +40% L25–35	100% L17–28	100% L17–28	+50% L30–35 +50% L30–35 +60% L28–35	+95% L20–35 +90% L20–35 +95% L20–35	+95% L20–35 +90% L20–35 +95% L20–35		10% L28–32	10% L28–32
Mr. Mime	5% L28 +5% L30	5% L28 +5% L30			+10% L28–30 +10% L28–30	+5% L28 +10% L28–30 +5% L28	+5% L28 +10% L28–30 +5% L28
Linoone	+20% L35	+20% L35
Whismur	+20% L25–30	+20% L25–30
Bidoof	+20% L35	+20% L35
Buizel	+20% L25–30	+20% L25–30
	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Fishing with an Old Rod
Tentacool	15% L10	15% L10			15% L10	15% L10	15% L10
Magikarp	85% L10	85% L10	100% L5	100% L5	85% L10	85% L10	85% L10	100% L5	100% L5	100% L5
	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Fishing with a Good Rod
Poliwag								50% L10	50% L10	50% L10
Tentacool	30% L20	30% L20			35% L20	35% L20	35% L20
Shellder	10% L20	10% L20			10% L20	10% L20	10% L20
Krabby			20% L5–15	60% L5–15
Horsea			60% L5–15	20% L5–15
Goldeen								50% L10	50% L10	50% L10
Magikarp	40% L20	40% L20	20% L5–15	20% L5–15	35% L20	35% L20	35% L20
Chinchou	20% L20	20% L20			20% L20	20% L20	20% L20
	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Fishing with a Super Rod
Psyduck			1% L25–35
Tentacool								60% L15–30
Tentacruel	20% L40	20% L40			20% L40	20% L40	20% L40	10% L30
Slowpoke				1% L25–35
Shellder	30% L40	30% L40			30% L40	30% L40	30% L40		25% L15	25% L15
Krabby				80% L15–25
Kingler				4% L25–35
Horsea			80% L15–25						25% L15	25% L15
Seadra			4% L25–35
Goldeen									25% L15	25% L15
Staryu								30% L20	25% L15	25% L15
Gyarados			15% L15–25	15% L15–25
Chinchou	40% L40	40% L40			40% L40	40% L40	40% L40
Lanturn	10% L40	10% L40			10% L40	10% L40	10% L40
	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Surfing
Tentacool	90% L30–35	90% L30–35	100% L5–40	100% L5–40	90% L30–39	90% L30–39	90% L30–39	100% L5–40	100% L5–40	100% L5–40
Tentacruel	10% L35	10% L35			10% L35–39	10% L35–39	10% L35–39