Route 221: 29 species in 2 games

Road 221: 29 species across 3 versions

DiamondPearlPlatinum

Diamond: 26 species
Species	Method	Levels	Chance	Game page
Nidorina	Walking in tall grass or a cave	29	20%	All places
Nidorino	Walking in tall grass or a cave	30	2%	All places
Tentacool	Surfing	20 to 30	60%	All places
Tentacruel	Surfing	20 to 40	5%	All places
Farfetch’d	Walking in tall grass or a cave	28	40%	All places
Magikarp	Fishing with a good rod	10 to 25	55%	All places
Magikarp	Fishing with an old rod	3 to 10	100%	All places
Gyarados	Fishing with a super rod	30 to 40	40%	All places
Aipom	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 10%	All places
Heracross	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	5%	All places
Wurmple	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 40%	All places
Silcoon	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	20%	All places
Wingull	Surfing	20 to 30	30%	All places
Wingull	Walking in tall grass or a cave	29	10%	All places
Pelipper	Surfing	20 to 40	5%	All places
Roselia	Walking in tall grass or a cave	29	10%	All places
Clamperl	Fishing with a super rod	20 to 30	15%	All places
Burmy	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 20%	All places
Combee	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 40%	All places
Floatzel	Walking in tall grass or a cave	28 to 30	up to 20%	All places
Cherubi	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 20%	All places
Shellos	Walking in tall grass or a cave	28	10%	All places
Gastrodon	Walking in tall grass or a cave	29 to 30	up to 9%	All places
Stunky	Walking in tall grass or a cave	28	20%	All places
Skuntank	Walking in tall grass or a cave	29 to 30	up to 11%	All places
Munchlax	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	100%	All places
Finneon	Fishing with a good rod	10 to 25	45%	All places
Lumineon	Fishing with a super rod	20 to 50	45%	All places

Pearl: 25 species
Species	Method	Levels	Chance	Game page
Nidorina	Walking in tall grass or a cave	30	2%	All places
Nidorino	Walking in tall grass or a cave	29	20%	All places
Tentacool	Surfing	20 to 30	60%	All places
Tentacruel	Surfing	20 to 40	5%	All places
Farfetch’d	Walking in tall grass or a cave	28	40%	All places
Magikarp	Fishing with a good rod	10 to 25	55%	All places
Magikarp	Fishing with an old rod	3 to 10	100%	All places
Gyarados	Fishing with a super rod	30 to 40	40%	All places
Sudowoodo	Walking in tall grass or a cave	29 to 30	up to 11%	All places
Aipom	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 10%	All places
Heracross	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	5%	All places
Wurmple	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 40%	All places
Cascoon	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	20%	All places
Wingull	Surfing	20 to 30	30%	All places
Wingull	Walking in tall grass or a cave	29	10%	All places
Pelipper	Surfing	20 to 40	5%	All places
Roselia	Walking in tall grass or a cave	29	10%	All places
Clamperl	Fishing with a super rod	20 to 30	15%	All places
Burmy	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 20%	All places
Combee	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 40%	All places
Floatzel	Walking in tall grass or a cave	28 to 30	up to 20%	All places
Cherubi	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 20%	All places
Shellos	Walking in tall grass or a cave	28	10%	All places
Gastrodon	Walking in tall grass or a cave	28 to 30	up to 20%	All places
Munchlax	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	100%	All places
Finneon	Fishing with a good rod	10 to 25	45%	All places
Lumineon	Fishing with a super rod	20 to 50	45%	All places

Platinum: 22 species
Species	Method	Levels	Chance	Game page
Nidorina	Walking in tall grass or a cave	30	11%	All places
Nidorino	Walking in tall grass or a cave	31	11%	All places
Tentacool	Surfing	20 to 30	60%	All places
Tentacruel	Surfing	20 to 40	9%	All places
Farfetch’d	Walking in tall grass or a cave	28 to 29	40%	All places
Magikarp	Fishing with a good rod	10 to 25	55%	All places
Magikarp	Fishing with an old rod	3 to 15	100%	All places
Gyarados	Fishing with a super rod	30 to 55	55%	All places
Sudowoodo	Walking in tall grass or a cave	29 to 31	up to 20%	All places
Aipom	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 15%	All places
Girafarig	Walking in tall grass or a cave	28 to 30	up to 20%	All places
Heracross	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	5%	All places
Wurmple	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	20%	All places
Wingull	Surfing	20 to 30	30%	All places
Pelipper	Surfing	20 to 40	1%	All places
Roselia	Walking in tall grass or a cave	28 to 30	up to 14%	All places
Burmy	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 40%	All places
Combee	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 40%	All places
Floatzel	Walking in tall grass or a cave	28 to 31	up to 20%	All places
Cherubi	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	up to 20%	All places
Munchlax	Slathering a honey tree with honey and waiting for a pokémon to appear	5 to 15	100%	All places
Finneon	Fishing with a good rod	15 to 20	40%	All places
Lumineon	Fishing with a good rod	25 to 35	5%	All places
Lumineon	Fishing with a super rod	30 to 55	45%	All places