Route 23

	Yellow	Red	Blue
Walking in tall grass or a cave
Arbok		5% L41
Ditto		35% L33–43	35% L33–43
Ekans		20% L26
Fearow	15% L40–45	25% L38–43	25% L38–43
Mankey	20% L36–41
Nidorina	30% L41–44
Nidorino	30% L41–44
Primeape	5% L41–46
Sandshrew			20% L26
Sandslash			5% L41
Spearow		15% L26	15% L26
	Yellow	Red	Blue
Fishing with an Old Rod
Magikarp	100% L5	100% L5	100% L5
	Yellow	Red	Blue
Fishing with a Good Rod
Goldeen	50% L10	50% L10	50% L10
Poliwag	50% L10	50% L10	50% L10
	Yellow	Red	Blue
Fishing with a Super Rod
Kingler		25% L23	25% L23
Poliwag	70% L25–30
Poliwhirl	30% L30–40
Seadra		25% L23	25% L23
Seaking		25% L23	25% L23
Slowbro		25% L23	25% L23

	FireRed	LeafGreen
Walking in tall grass or a cave
Arbok	5% L44
Ekans	20% L32–34
Fearow	25% L40–44	25% L40–44
Mankey	30% L32–34	30% L32–34
Primeape	5% L42	5% L42
Sandshrew		20% L32–34
Sandslash		5% L44
Spearow	15% L32–34	15% L32–34
	FireRed	LeafGreen
Fishing with an Old Rod
Magikarp	100% L5	100% L5
	FireRed	LeafGreen
Fishing with a Good Rod
Goldeen	20% L5–15	20% L5–15
Magikarp	20% L5–15	20% L5–15
Poliwag	60% L5–15	60% L5–15
	FireRed	LeafGreen
Fishing with a Super Rod
Gyarados	15% L15–25	15% L15–25
Poliwag	40% L15–25	40% L15–25
Poliwhirl	40% L20–30	40% L20–30
Psyduck	5% L15–35
Slowpoke		5% L15–35
	FireRed	LeafGreen
Surfing
Psyduck	100% L20–40
Slowpoke		100% L20–40