Great Marsh
Pokemon Diamond and Pearl
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
 Arbok | 20-26 | Walking in tall grass or a cave | 48% |
 Azurill | 20-24 | Walking in tall grass or a cave | 26% |
 Barboach | 15-20 | Fishing with a Good Rod | 200% |
 Bibarel | 21-25 | Walking in tall grass or a cave | 120% |
 Bidoof | 22-26 | Walking in tall grass or a cave | 26% |
 Budew | 20-24 | Walking in tall grass or a cave | 120% |
 Carvanha | 15-30 | Fishing with a Super Rod | 225% |
 Gyarados | 40-55 | Fishing with a Super Rod | 75% |
| Gyarados | 15-30 | Fishing with a Good Rod | 25% |
 Hoothoot | 20-24 | Walking in tall grass or a cave | 100% |
 Magikarp | 10-25 | Fishing with a Good Rod | 275% |
| Magikarp | 3-10 | Fishing with an Old Rod | 500% |
 Marill | 20-30 | Surfing | 150% |
| Marill | 21-26 | Walking in tall grass or a cave | 90% |
 Noctowl | 26 | Walking in tall grass or a cave | 20% |
 Psyduck | 20-40 | Surfing | 25% |
| Psyduck | 20-26 | Walking in tall grass or a cave | 200% |
 Quagsire | 21-26 | Walking in tall grass or a cave | 90% |
| Quagsire | 20-40 | Surfing | 25% |
 Starly | 22-26 | Walking in tall grass or a cave | 120% |
 Whiscash | 30-55 | Fishing with a Super Rod | 200% |
 Wooper | 20-30 | Surfing | 300% |
| Wooper | 20-24 | Walking in tall grass or a cave | 120% |
Pokemon Platinum
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
| Arbok | 28-30 | Walking in tall grass or a cave | 48% |
| Barboach | 10-25 | Fishing with a Good Rod | 270% |
| Bibarel | 26-28 | Walking in tall grass or a cave | 200% |
| Carvanha | 30-55 | Fishing with a Super Rod | 270% |
| Gyarados | 30-55 | Fishing with a Super Rod | 240% |
| Hoothoot | 26-27 | Walking in tall grass or a cave | 60% |
| Magikarp | 3-15 | Fishing with an Old Rod | 600% |
| Magikarp | 10-25 | Fishing with a Good Rod | 330% |
| Noctowl | 28-30 | Walking in tall grass or a cave | 60% |
| Quagsire | 20-40 | Surfing | 60% |
| Quagsire | 28-30 | Walking in tall grass or a cave | 60% |
 Tangela | 27-31 | Walking in tall grass or a cave | 186% |
 Tropius | 28-30 | Walking in tall grass or a cave | 80% |
| Whiscash | 20-50 | Fishing with a Super Rod | 90% |
| Wooper | 20-30 | Surfing | 540% |
| Wooper | 26-30 | Walking in tall grass or a cave | 200% |
 Yanma | 26-31 | Walking in tall grass or a cave | 186% |