Route 27

Kanto

	HeartGold	SoulSilver	Crystal	Gold	Silver
Walking in tall grass or a cave
Raticate	30% L28–30 +10% L28	+10% L30 +10% L30 +10% L30 +10% L30 +10% L30	+20% L30 +20% L30 +20% L30	+30% L28 +40% L28–30 +40% L28–30	+10% L30 +10% L30
Arbok		20% L28 +10% L28	+30% L28 +30% L28		+30% L28 +30% L28 +30% L28
Sandslash	5% L30			+5% L30 +5% L30 +5% L30
Ponyta	5% L32	5% L32	+5% L32 +5% L32	+5% L32 +5% L32 +5% L32	+5% L32 +5% L32 +5% L32
Doduo	+20% L28 +20% L28 +30% L28–30 +30% L28–30	+30% L28–30 +30% L28–30 +10% L28 +10% L28	+40% L28–30 +40% L28–30	+50% L28–30 +50% L28–30	+50% L28–30 +50% L28–30
Dodrio		+5% L30 +5% L30	+5% L30 +5% L30		+5% L30 +5% L30
Noctowl			+40% L28–32
Quagsire	+20% L28 +30% L28–30	+25% L28–30 +10% L30 +20% L28–30	+40% L28–30	+10% L28 +50% L28–30	+10% L28 +55% L28–32
Linoone	+20% L30	+20% L30
Whismur	+20% L28	+20% L28
Bidoof	+20% L30	+20% L30
Buizel	+20% L28	+20% L28
	HeartGold	SoulSilver	Crystal	Gold	Silver
Fishing with an Old Rod
Tentacool	15% L10	15% L10	15% L10	15% L10	15% L10
Magikarp	85% L10	85% L10	85% L10	85% L10	85% L10
	HeartGold	SoulSilver	Crystal	Gold	Silver
Fishing with a Good Rod
Tentacool	30% L20	30% L20	35% L20	35% L20	35% L20
Shellder	10% L20	10% L20	10% L20	10% L20	10% L20
Magikarp	40% L20	40% L20	35% L20	35% L20	35% L20
Chinchou	20% L20	20% L20	20% L20	20% L20	20% L20
	HeartGold	SoulSilver	Crystal	Gold	Silver
Fishing with a Super Rod
Tentacruel	20% L40	20% L40	20% L40	20% L40	20% L40
Shellder	30% L40	30% L40	30% L40	30% L40	30% L40
Chinchou	40% L40	40% L40	40% L40	40% L40	40% L40
Lanturn	10% L40	10% L40	10% L40	10% L40	10% L40
	HeartGold	SoulSilver	Crystal	Gold	Silver
Surfing
Tentacool	30% L15 +60% L20	30% L15 +60% L20	90% L15–24	90% L15–24	90% L15–24
Tentacruel	10% L20	10% L20	10% L20–24	10% L20–24	10% L20–24
Luvdisc	+60% L20	+60% L20