Route 31
Pokemon HeartGold
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
 Bellsprout | 3 | Walking in tall grass or a cave | 20% |
 Bidoof | 3 | Walking in tall grass or a cave | 20% |
 Buizel | 3-4 | Walking in tall grass or a cave | 20% |
 Caterpie | 4-5 | Walking in tall grass or a cave | 70% |
 Hoothoot | 5 | Walking in tall grass or a cave | 10% |
 Linoone | 3 | Walking in tall grass or a cave | 20% |
 Magikarp | 40 | Fishing with a Super Rod | 20% |
| Magikarp | 10 | Fishing with an Old Rod | 85% |
| Magikarp | 20 | Fishing with a Good Rod | 40% |
 Metapod | 5 | Walking in tall grass or a cave | 30% |
 Pidgey | 3 | Walking in tall grass or a cave | 60% |
 Poliwag | 40 | Fishing with a Super Rod | 80% |
| Poliwag | 10-25 | Surfing | 90% |
| Poliwag | 20 | Fishing with a Good Rod | 60% |
| Poliwag | 10 | Fishing with an Old Rod | 15% |
 Poliwhirl | 15-32 | Surfing | 10% |
 Rattata | 4-5 | Walking in tall grass or a cave | 40% |
 Spinarak | 3 | Walking in tall grass or a cave | 30% |
 Whismur | 3-4 | Walking in tall grass or a cave | 20% |
Pokemon SoulSilver
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
| Bellsprout | 3 | Walking in tall grass or a cave | 20% |
| Bidoof | 3 | Walking in tall grass or a cave | 20% |
| Buizel | 4 | Walking in tall grass or a cave | 20% |
| Hoothoot | 4-5 | Walking in tall grass or a cave | 40% |
 Kakuna | 5 | Walking in tall grass or a cave | 25% |
 Ledyba | 4 | Walking in tall grass or a cave | 30% |
| Linoone | 3 | Walking in tall grass or a cave | 20% |
| Magikarp | 40 | Fishing with a Super Rod | 20% |
| Magikarp | 10 | Fishing with an Old Rod | 85% |
| Magikarp | 20 | Fishing with a Good Rod | 40% |
| Pidgey | 4-5 | Walking in tall grass or a cave | 40% |
| Poliwag | 10-25 | Surfing | 90% |
| Poliwag | 40 | Fishing with a Super Rod | 80% |
| Poliwag | 10 | Fishing with an Old Rod | 15% |
| Poliwag | 20 | Fishing with a Good Rod | 60% |
| Poliwhirl | 15-32 | Surfing | 10% |
| Rattata | 4-5 | Walking in tall grass or a cave | 40% |
 Weedle | 4-5 | Walking in tall grass or a cave | 65% |
| Whismur | 4 | Walking in tall grass or a cave | 20% |