Sea Route 230: 25 species in 2 games

Road 230: 25 species across 3 versions

DiamondPearlPlatinum

Diamond: 20 species
Species	Method	Levels	Chance	Game page
Oddish	Walking in tall grass or a cave	18 to 23	11%	All places
Gloom	Walking in tall grass or a cave	50	20%	All places
Golduck	Walking in tall grass or a cave	52	10%	All places
Bellsprout	Walking in tall grass or a cave	18 to 23	11%	All places
Weepinbell	Walking in tall grass or a cave	50	20%	All places
Tentacruel	Surfing	40 to 55	5%	All places
Seel	Surfing	35 to 45	30%	All places
Dewgong	Surfing	40 to 55	5%	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
Togepi	Walking in tall grass or a cave	18 to 23	22%	All places
Corsola	Walking in tall grass or a cave	50	40%	All places
Remoraid	Fishing with a good rod	10 to 25	45%	All places
Octillery	Fishing with a super rod	40 to 55	15%	All places
Beautifly	Walking in tall grass or a cave	51	10%	All places
Pelipper	Surfing	40 to 55	60%	All places
Wailmer	Fishing with a super rod	30 to 40	40%	All places
Wailord	Fishing with a super rod	35 to 55	5%	All places
Floatzel	Walking in tall grass or a cave	50 to 52	13%	All places
Gastrodon	Walking in tall grass or a cave	51	5%	All places

Pearl: 20 species
Species	Method	Levels	Chance	Game page
Oddish	Walking in tall grass or a cave	18 to 23	11%	All places
Gloom	Walking in tall grass or a cave	50	20%	All places
Golduck	Walking in tall grass or a cave	52	10%	All places
Bellsprout	Walking in tall grass or a cave	18 to 23	11%	All places
Weepinbell	Walking in tall grass or a cave	50	20%	All places
Tentacruel	Surfing	40 to 55	5%	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
Togepi	Walking in tall grass or a cave	18 to 23	22%	All places
Corsola	Walking in tall grass or a cave	50	40%	All places
Remoraid	Fishing with a good rod	10 to 25	45%	All places
Octillery	Fishing with a super rod	40 to 55	15%	All places
Dustox	Walking in tall grass or a cave	51	10%	All places
Pelipper	Surfing	40 to 55	60%	All places
Wailmer	Fishing with a super rod	30 to 40	40%	All places
Wailord	Fishing with a super rod	35 to 55	5%	All places
Spheal	Surfing	35 to 45	30%	All places
Sealeo	Surfing	40 to 55	5%	All places
Floatzel	Walking in tall grass or a cave	50 to 52	13%	All places
Gastrodon	Walking in tall grass or a cave	51	5%	All places

Platinum: 18 species
Species	Method	Levels	Chance	Game page
Oddish	Walking in tall grass or a cave	47	20%	All places
Gloom	Walking in tall grass or a cave	49	5%	All places
Bellsprout	Walking in tall grass or a cave	47	up to 20%	All places
Weepinbell	Walking in tall grass or a cave	49	5%	All places
Tentacruel	Surfing	35 to 55	10%	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	40%	All places
Togepi	Walking in tall grass or a cave	48 to 50	22%	All places
Corsola	Walking in tall grass or a cave	48	40%	All places
Remoraid	Fishing with a good rod	10 to 25	45%	All places
Octillery	Fishing with a super rod	20 to 50	15%	All places
Wingull	Walking in tall grass or a cave	48	up to 4%	All places
Pelipper	Surfing	35 to 55	30%	All places
Pelipper	Walking in tall grass or a cave	48 to 50	up to 20%	All places
Roselia	Walking in tall grass or a cave	49	10%	All places
Wailmer	Fishing with a super rod	30 to 40	40%	All places
Wailord	Fishing with a super rod	40 to 55	5%	All places
Sealeo	Surfing	35 to 55	60%	All places
Floatzel	Walking in tall grass or a cave	48 to 50	up to 20%	All places