Sea Route 20
Pokemon Red and Blue
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
 Goldeen | 10 | Fishing with a Good Rod | 50% |
| Goldeen | 15 | Fishing with a Super Rod | 25% |
 Horsea | 15 | Fishing with a Super Rod | 25% |
 Magikarp | 5 | Fishing with an Old Rod | 100% |
 Poliwag | 10 | Fishing with a Good Rod | 50% |
 Shellder | 15 | Fishing with a Super Rod | 25% |
 Staryu | 15 | Fishing with a Super Rod | 25% |
 Tentacool | 5-40 | Surfing | 100% |
Pokemon Yellow
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
| Goldeen | 10 | Fishing with a Good Rod | 50% |
| Magikarp | 5 | Fishing with an Old Rod | 100% |
| Poliwag | 10 | Fishing with a Good Rod | 50% |
| Staryu | 30 | Fishing with a Super Rod | 20% |
| Tentacool | 5-40 | Surfing | 100% |
| Tentacool | 20 | Fishing with a Super Rod | 40% |
 Tentacruel | 20-40 | Fishing with a Super Rod | 40% |
Pokemon HeartGold and SoulSilver
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
 Chinchou | 20 | Fishing with a Good Rod | 20% |
| Chinchou | 40 | Fishing with a Super Rod | 40% |
 Lanturn | 40 | Fishing with a Super Rod | 10% |
| Magikarp | 10 | Fishing with an Old Rod | 85% |
| Magikarp | 20 | Fishing with a Good Rod | 40% |
| Shellder | 20 | Fishing with a Good Rod | 10% |
| Shellder | 40 | Fishing with a Super Rod | 30% |
| Tentacool | 10 | Fishing with an Old Rod | 15% |
| Tentacool | 20 | Fishing with a Good Rod | 30% |
| Tentacool | 30-35 | Surfing | 90% |
| Tentacruel | 40 | Fishing with a Super Rod | 20% |
| Tentacruel | 35 | Surfing | 10% |