Route 121
Pokemon Ruby
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
 Duskull | 26-28 | Walking in tall grass or a cave | 30% |
 Gloom | 28 | Walking in tall grass or a cave | 5% |
 Kecleon | 25 | Walking in tall grass or a cave | 1% |
 Linoone | 26-28 | Walking in tall grass or a cave | 20% |
 Magikarp | 10-30 | Fishing with a Good Rod | 60% |
| Magikarp | 5-10 | Fishing with an Old Rod | 70% |
 Oddish | 26-28 | Walking in tall grass or a cave | 15% |
 Pelipper | 25-30 | Surfing | 5% |
 Tentacool | 10-30 | Fishing with a Good Rod | 20% |
| Tentacool | 5-10 | Fishing with an Old Rod | 30% |
| Tentacool | 5-35 | Surfing | 60% |
 Wailmer | 20-45 | Fishing with a Super Rod | 100% |
| Wailmer | 10-30 | Fishing with a Good Rod | 20% |
 Wingull | 26-28 | Walking in tall grass or a cave | 9% |
| Wingull | 10-30 | Surfing | 35% |
 Zigzagoon | 26 | Walking in tall grass or a cave | 20% |
Pokemon Sapphire
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
| Gloom | 28 | Walking in tall grass or a cave | 5% |
| Kecleon | 25 | Walking in tall grass or a cave | 1% |
| Linoone | 26-28 | Walking in tall grass or a cave | 20% |
| Magikarp | 10-30 | Fishing with a Good Rod | 60% |
| Magikarp | 5-10 | Fishing with an Old Rod | 70% |
| Oddish | 26-28 | Walking in tall grass or a cave | 15% |
| Pelipper | 25-30 | Surfing | 5% |
 Shuppet | 26-28 | Walking in tall grass or a cave | 30% |
| Tentacool | 5-35 | Surfing | 60% |
| Tentacool | 5-10 | Fishing with an Old Rod | 30% |
| Tentacool | 10-30 | Fishing with a Good Rod | 20% |
| Wailmer | 10-30 | Fishing with a Good Rod | 20% |
| Wailmer | 20-45 | Fishing with a Super Rod | 100% |
| Wingull | 10-30 | Surfing | 35% |
| Wingull | 26-28 | Walking in tall grass or a cave | 9% |
| Zigzagoon | 26 | Walking in tall grass or a cave | 20% |
Pokemon Emerald
| Pokemon | Levels | Method | Rarity |
|---|---|---|---|
| Gloom | 28 | Walking in tall grass or a cave | 5% |
| Kecleon | 25 | Walking in tall grass or a cave | 1% |
| Magikarp | 10-30 | Fishing with a Good Rod | 60% |
| Magikarp | 5-10 | Fishing with an Old Rod | 70% |
 Mightyena | 26-28 | Walking in tall grass or a cave | 20% |
| Oddish | 26-28 | Walking in tall grass or a cave | 15% |
| Pelipper | 25-30 | Surfing | 5% |
 Poochyena | 26 | Walking in tall grass or a cave | 20% |
| Shuppet | 26-28 | Walking in tall grass or a cave | 30% |
| Tentacool | 10-30 | Fishing with a Good Rod | 20% |
| Tentacool | 5-10 | Fishing with an Old Rod | 30% |
| Tentacool | 5-35 | Surfing | 60% |
| Wailmer | 20-45 | Fishing with a Super Rod | 100% |
| Wailmer | 10-30 | Fishing with a Good Rod | 20% |
| Wingull | 10-30 | Surfing | 35% |
| Wingull | 26-28 | Walking in tall grass or a cave | 9% |