Route 43: 23 species in 3 games

Road 43: 23 species across 5 versions

Gold and SilverCrystalHeartGold and SoulSilver

Gold and Silver: 11 species
Species	Method	Levels	Chance	Game page
Pidgeotto	Walking in tall grass or a cave	17	up to 25%	All places
Spearow	Headbutting a high encounter rate tree	10	50%	All places
Spearow	Headbutting a low encounter rate tree	10	80%	All places
Spearow	Headbutting a normal encounter rate tree	10	80%	All places
Venonat	Walking in tall grass or a cave	16	up to 15%	All places
Poliwag	Fishing with a good rod	20	65%	All places
Poliwag	Fishing with an old rod	10	15%	All places
Poliwag	Fishing with a super rod	40	80%	All places
Magikarp	Fishing with a good rod	20	35%	All places
Magikarp	Fishing with an old rod	10	85%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Magikarp	Surfing	10 to 24	100%	All places
Noctowl	Walking in tall grass or a cave	17	20%	All places
Mareep	Walking in tall grass or a cave	15	up to 10%	All places
Flaaffy	Walking in tall grass or a cave	15 to 17	up to 40%	All places
Aipom	Headbutting a high encounter rate tree	10	20%	All places
Aipom	Headbutting a low encounter rate tree	10	20%	All places
Aipom	Headbutting a normal encounter rate tree	10	20%	All places
Girafarig	Walking in tall grass or a cave	15	up to 30%	All places
Heracross	Headbutting a high encounter rate tree	10	30%	All places

Crystal: 12 species
Species	Method	Levels	Chance	Game page
Pidgeotto	Walking in tall grass or a cave	16	up to 30%	All places
Raticate	Walking in tall grass or a cave	16 to 17	up to 25%	All places
Venonat	Headbutting a low encounter rate tree	10	15%	All places
Venonat	Headbutting a normal encounter rate tree	10	15%	All places
Venonat	Walking in tall grass or a cave	15 to 17	40%	All places
Venomoth	Walking in tall grass or a cave	17	5%	All places
Poliwag	Fishing with a good rod	20	65%	All places
Poliwag	Fishing with an old rod	10	15%	All places
Poliwag	Fishing with a super rod	40	80%	All places
Farfetch’d	Walking in tall grass or a cave	16	up to 20%	All places
Exeggcute	Headbutting a high encounter rate tree	10	20%	All places
Exeggcute	Headbutting a low encounter rate tree	10	20%	All places
Exeggcute	Headbutting a normal encounter rate tree	10	20%	All places
Magikarp	Fishing with a good rod	20	35%	All places
Magikarp	Fishing with an old rod	10	85%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Magikarp	Surfing	10 to 24	100%	All places
Sentret	Walking in tall grass or a cave	15	up to 30%	All places
Furret	Walking in tall grass or a cave	15 to 17	up to 15%	All places
Hoothoot	Headbutting a high encounter rate tree	10	50%	All places
Hoothoot	Headbutting a low encounter rate tree	10	65%	All places
Hoothoot	Headbutting a normal encounter rate tree	10	65%	All places
Hoothoot	Walking in tall grass or a cave	16	30%	All places
Pineco	Headbutting a high encounter rate tree	10	30%	All places

HeartGold and SoulSilver: 15 species
Species	Method	Levels	Chance	Game page
Pidgeotto	Walking in tall grass or a cave	17	up to 20%	All places
Venonat	Headbutting trees	17 to 18	15%	All places
Venonat	Walking in tall grass or a cave	15 to 17	up to 15%	All places
Poliwag	Fishing with a good rod	20	60%	All places
Poliwag	Fishing with an old rod	10	15%	All places
Poliwag	Fishing with a super rod	40	80%	All places
Exeggcute	Headbutting trees	15 to 18	up to 20%	All places
Magikarp	Fishing with a good rod	20	40%	All places
Magikarp	Fishing with an old rod	10	85%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Magikarp	Surfing	5 to 50	100%	All places
Hoothoot	Headbutting trees	15 to 18	up to 65%	All places
Noctowl	Walking in tall grass or a cave	17	20%	All places
Mareep	Walking in tall grass or a cave	15 to 16	up to 10%	All places
Flaaffy	Walking in tall grass or a cave	15 to 17	up to 20%	All places
Girafarig	Walking in tall grass or a cave	15	up to 20%	All places
Pineco	Headbutting trees	15 to 16	30%	All places
Linoone	Walking in tall grass or a cave	17	20%	All places
Whismur	Walking in tall grass or a cave	15	20%	All places
Bidoof	Walking in tall grass or a cave	17	20%	All places
Buizel	Walking in tall grass or a cave	15	20%	All places